[[Interface::library]]

Gnustep: Provides an object oriented application development framework and tool set for use on a wide variety of platforms. It provides a generalized visual interface design and a cohesive user interface. It also uses a common imaging model called Display PostScript (based on PostScript) to do all its drawing, so the program is truly WYSIWYG. GNUstep is written in the Objective-C language, a simple yet powerful object-oriented language based on C that gives you the full power of an object-oriented language with exactly one syntax addition to C and a dozen or so additional keywords.

Gnustep-back ,: This is the back-end component for the GNUstep GUI Library. GNUstep is a cross-platform, object-oriented set of frameworks for desktop application development. The set of frameworks, based on Cocoa (previously OpenStep), enables developers to rapidly build sophisticated software by employing a large library of reusable software components. This GUI uses an abstraction layer to talk to the windowing system. It uses the GNUstep back library to handle all of the windowing-system-specific details. It currently works via a DPS emulation engine to emulate the DPS functions required by the front-end system. More recently, a back end based on Cairo was implemented. This is a high-performance 2D graphics library supporting vector and composing operations. Another back-end runs on top of the X Window System and uses only Xlib calls for graphics, but seems deprecated. (There is also a back end supporting the Windows GDI, allowing GNUstep applications to run on Windows)

Gnustep-base: The GNUstep Base Library is a library of general-purpose, non-graphical Objective C objects. For example, it includes classes for strings, object collections, byte streams, typed coders, invocations, notifications, notification dispatchers, moments in time, network ports, remote object messaging support (distributed objects), and event loops. It provides functionality that aims to implement the non-graphical portion of the Apple's Cocoa frameworks (the Foundation library) which came from the OpenStep standard.

Gnustep-gui: The GNUstep GUI Library is an object-oriented application programming interface (API) for writing graphical applications. These classes include graphical objects such as buttons, text fields, popup lists, browser lists, and windows; there are also many associated classes for handling events, colors, fonts, pasteboards and images. It is based on Cocoa (previously OpenStep). The library calls methods of the display server, while gnustep-back translates those calls to native calls of the operating system.

Gnutls ,: GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base GNU/Linux libraries. A back-end designed to work and be secure out of the box, keeping the TLS and PKI complexity outside the applications.

Go: go is a small shell command for changing directories quickly. Typically you have a set of directories that you work in. Typing out the names of those dirs in full can be tedious.

Goblin Graph Library: The GOBLIN project consists of a C++ class library for a large series of graph optimization problems, GOSH, an extension of the Tcl/Tk scripting language to graph objects, and GOBLET, a graphical user interface to the library functions. GOBLET includes a graph editor, but provides only basic graph layout methods.

Goffice: GOffice is a GObject based C library. It provides easy API access to creating and manipulating graphs and canvases. It also includes a number of utilities and widgets that might be useful in office productivity software and similar. The GOffice code was originally a part of Gnumeric, but was split into a separate library in 2005. Today it is being used by projects such as Gnumeric, Gnucash, Abiword (optional), GChemUtils and more.

Google-adwords-dumper: google-adwords-dumper is a program to fetch basic data of an adwords account and some relevant performance reports of the account. It also fetches the data of child accounts if the given account is a master account.

Grace Library: This is a candidate for deletion: Links broken. Email to maintainer broken. Poppy-one (talk) 14:34, 2 August 2018 (EDT) Grace is a C++ library/enhancement for creating multithreaded server applications. It delivers basic building blocks for stable, readable code and makes it easy to exchange data with other systems.

Grapefruit

GrapeFruit is a pure Python module that let you easily manipulate and convert color information. Its Primary goal is to be natural and flexible. The following color systems are supported by GrapeFruit:

RGB (sRGB)
HSL
HSV
YIQ
YUV
CIE-XYZ
CIE-LAB (with the illuminant you want)
CMY
CMYK
HTML/CSS color definition (#RRGGBB, #RGB or the X11 color name)
RYB (artistic color wheel)

Graphics3D: 'Graphics3D' is a C++ library for game developers, researchers, and students. It is a base of robust and high performance code common to most 3D projects. It is not a standalone graphics or game engine--it is a set of pieces to jumpstart your own engine or graphics project. The library has two parts: G3D for pure math, and GLG3D for interacting with hardware acceleration via OpenGL. You can use G3D without GLG3D if you want to use another 3D API or don't like the OpenGL abstraction.

Gretl: Gretl, an acronym for Gnu Regression Econometrics and Time-series Library, is a package for performing statistical computations for econometrics. It consists of both a command-line client and a graphical client. It features a variety of estimators such as least-squares and maximum likelihood; several time series methods such as ARIMA and GARCH; limited dependent variables such as logit, probit and tobit; and a powerful scripting language. It can output models as LaTeX files. It also may be linked to GNU R and GNU Octave for further data analysis.

Groupserver: GroupsServer is a server package for hosting mailing lists, like GNU Mailman, or Sympa. But like Discourse and Loomio, is also has a feature rich web interface, allowing each mailing list it hosts to also be used as if it were a web forum. In keeping with its name GroupServer refers to each mailing list forum as a 'group'. Users can send, receive, read, and reply, to group messages by email, or they can read and post to the group from the web interface. Group admins can manage and moderate their groups using email commands, as in older mailing list packages, or using the web interface. A single GroupServer instance can host multiple organisations, each with multiple groups.

Gsasl: GNU SASL an implementation of the Simple Authentication and Security Layer (SASL) framework, consisting of a library with several plugins, command-line application, test-suite, documentation and source code usage examples. GNU SASL consists of a library (`libgsasl'), a command line utility (`gsasl') to access the library from the shell, and a manual. The library includes support for the framework (with authentication functions and application data privacy and integrity functions) and at least partial support for the CRAM-MD5, EXTERNAL, GSSAPI, ANONYMOUS, PLAIN, SECURID, DIGEST-MD5, SCRAM-SHA-1, SCRAM-SHA-1-PLUS, LOGIN, and NTLM mechanisms.

Gscope: A Software Oscilloscope Library: Gscope is a software oscilloscope library build using the GTK and GNOME toolkits. Gscope can be used to monitor, display and debug various types of "real-time" data. Additionally, the scope can be used for graphing file data that is in a tuple format.

Gsl: The GNU Scientific Library is a library for numerical analysis in C and C++. It includes a wide range of mathematical routines, with over 1000 functions in total. Subject areas covered by the library include: differential equations, linear algebra, Fast Fourier Transforms and random numbers.

Gss: GNU Generic Security Service Library implements the GSS-API framework and a Kerberos V5 mechanism (through Shishi). GSS-API and Kerberos V5 is used by network clients and servers to perform authentication, often using the SSH protocol for remote access or SMTP/IMAP/POP3 for email. This package contains also a command line tool for GSS.

Gstreamer: GStreamer is a library for constructing graphs of media-handling components. The applications it supports range from simple Ogg/Vorbis playback, audio/video streaming to complex audio mixing and video non-linear editing. Applications can take advantage of advances in codec and filter technology transparently. Developers can add new codecs and filters by writing a simple plugin with a clean, generic interface. This package provides the core library and elements.

Gtk+: GTK+ is a GUI Toolkit for creating graphical user interfaces. This package provides a complete set of widgets suitable for projects ranging from small one-off tools to complete application suites. In addition to basic widgets, such as buttons, check boxes, and text entries, it also provides Model-View-Controller (MVC) APIs for tree views, multi-line text fields, and menu and toolbar actions. GTK+ is the primary library used to construct user interfaces in GNOME. Its name stands for "GIMP Tool Kit", as originally it was explicitly written for that image manipulation program, and later extracted from it as a stand-alone library. Third-party language bindings designed for the GNU system are provided by the Guile-Gnome project.

Gtk2Hs: 'Gtk2Hs' is a GUI library for Haskell based on Gtk. It features automatic memory management, Unicode support, and bindings for the Mozilla browser rendering engine. It also includes bindings for several Gnome modules: libglade, for loading GUIs from xml files at run-time, so you can design an interface visually using the Glade user interface builder; GConf, for storing application preferences; and SourceView, a source code editor widget with syntax highlighting.

GtkHTML: GtkHTML is a HTML rendering/editing library. It is not designed to be the ultimate HTML browser/editor; instead, it is designed to be easily embedded into applications that require lightweight HTML functionality.

Guile-gcrypt: Guile-Gcrypt is a cryptography library for Guile using Libgcrypt. The API provides a Guile 2.x interface to a subset of the GNU Libgcrypt crytographic library, which is itself used by the GNU Privacy Guard (GPG).

Guile-git: This package provides Guile bindings to libgit2, a library to manipulate repositories of the Git version control system.

Guile-json

Guile-JSON is a JSON module for Guile. It supports parsing and building JSON documents according to the http://json.org specification. These are the main features:

Strictly complies to JSON specification.
Build JSON documents programmatically via macros.
Unicode support for strings.
Allows JSON pretty printing.

Guile-xcb: Guile XCB is an X11 client library written entirely in Guile. It makes use of the Guile compiler and virtual machine to turn XML descriptions of the X protocol provided by the XCB project into Guile object code files. Support is included for the core X protocol and twenty-seven extensions. Guile XCB also includes some simple code for running asynchronous event loops.

Gwenhywfar: 'Gwenhywfar' is a multi-purpose library that provides useful functions such as configuration file handling, a full featured message generation and parsing engine, and an operating system abstraction layer. It is used by Libchipcard, OpenHBCI, AqMoney, and various other projects.

HCluster

A hierarchical clustering package for Scipy. This library provides Python functions for hierarchical clustering. Its features include:

generating hierarchical clusters from distance matrices
computing distance matrices from observation vectors
computing statistics on clusters
cutting linkages to generate flat clusters
and visualizing clusters with dendrograms.

HPAlib: The HPA library offers functions for high precision arithmetic, a high precision math library and functions which apply high precision computation. The math library support includes evaluation of trigonometric, inverse trigonometric, hyperbolic, inverse hyperbolic, logarithm and exponential functions at the same precision as the floating point math itself. The version 1.0 of the HPA library supports high precision complex arithmetic and includes an extended precision complex math library.

HTML Defaultify: 'Defaultify' lets you populate any HTML form with default values that you specify-- it parses the HTML to find the tags representing form fields, and alters those tags so that the desired initial values will be set. It's useful for letting a user correct input errors, presenting a form to edit an existing database record (or user account information), maintaining a query form from one results page to the next, etc. HTML::Defaultify lets you completely separate the HTML from the program code, which means a non-technical designer can work on the HTML while a programmer works on the code. Also, it uses existing HTML, so you needn't rewrite old pages in a new format.

HTML Mason: HTML::Mason is a web site development and delivery system that constructs web pages and sites from shared, reusable building blocks called components. Components contain a mix of Perl and HTML, and can call each other and pass values back and forth like subroutines. They increase modularity and eliminate repetitive work. HTML::Mason is most powerful when used in conjunction with mod_perl, but can be used in standalone applications as well.

HTTPlib2: A comprehensive HTTP client library, httplib2 supports many features left out of other HTTP libraries.

Hachoir project- hachoir core

Hachoir is the french name for a mincer: a tool used by butchers to cut meat. Hachoir is also a tool written for hackers to cut a file or any binary stream. A file is split in a tree of fields where the smallest field can be just a bit. There are various field types: integer, string, bits, padding, sub file, etc. Hachoir has many interesting features:

Autofix: Hachoir is able to open invalid / truncated files
Lazy: Open a file is very fast since no information is read from file, data are read and/or computed when the user ask for it
Types: Hachoir has many predefined field types (integer, bit, string, etc.) and supports string with charset (ISO-8859-1, UTF-8, UTF-16, ...)
Addresses and sizes are stored in bit, so flags are stored as classic fields
Endian: You have to set endian once, and then number are converted in the right endian
Editor: Using Hachoir representation of data, you can edit, insert, remove data and then save in a new file.
Website: http://hachoir.org/wiki/hachoir-core

Hachoir project- hachoir regex: hachoir-regex is a Python library for regular expression (regex or regexp) manupulation. You can use a b (or) and a+b (and) operators. Expressions are optimized during the construction: merge ranges, simplify repetitions, etc. It also contains a class for pattern matching allowing you to search multiple strings and regex at the same time.

Hachoir project- hachoir subfile: hachoir-subfile is a tool based on hachoir-parser to find subfiles in any binary stream. It searches images, videos, SWF files, and all sub files in a drive.

Ham Radio Control Libraries: The HAM radio equipment control libraries allow you to write amateur radio equipment control programs for transceivers which use CAT or similar computer interfaces for control.

HapCluster++: HapCluster++ is a software package for linkage disequilibrium mapping using coalescent theory. It is based on a Bayesian Markov-chain Monte Carlo (MCMC) method for fine-scale linkage-disequilibrium gene mapping using high-density marker maps. HapCluster++ is a C++ implementation of the method described in the paper "Fine Mapping of Disease Genes via Haplotype Clustering" by E.R.B. Waldron, J.C. Whitaker, and D.J. Balding. Genetic Epidemiology. 30: 170Ãâ179. (2006).

Harminv: Harminv is a program (and accompanying library) to solve the problem of harmonic inversion. Given a discrete-time, finite-length signal that consists of a sum of finitely-many sinusoids (possibly exponentially decaying) in a given bandwidth, it determines the frequencies, decay constants, amplitudes, and phases of those sinusoids. Harminv can, in principle, provide much better accuracy than straightforwardly extracting FFT peaks because it assumes a specific form for the signal. (Fourier transforms, in contrast, attempt to represent *any* data as a sum of sinusoidal components.) It is also often more robust than directly least-squares fitting the data (which can have problematic convergence). Harminv employs the "filter diagonalization method" (FDM) of Mandelshtam and Taylor.

Hasard: This is a candidate for deletion: Links broken. Email to maintainer broken. Poppy-one (talk) 15:09, 2 August 2018 (EDT) Hasard is a pseudo-random random number generator (PRNG) library. It includes multiple engines (algorithms), examples: Park-Miller, Mersenne Twister and GNU/Linux built-in random PRNG. It has simple API but with strong code, eg. PRNG seed can be generated using strong entropy (hardware random number generator like /dev/random on GNU/Linux). The library is written in C and a Python binding is available. "Hasard" is the french word for "randomness".

Hashit: Hashit is a library of generic hash tables that supports different collision handling methods with one common interface. Both data and keys can be of any data type. It is small and easy to use.

Hfloat: The Huge-float package is for computations with very long (huge!) floating point numbers. With hfloat you can compute pi to several million digits.

Highlight.js

Highlight.js is a syntax highlighter for the Web.

135 languages and 65 styles (live demo)
Automatic language detection
Multi-language code highlighting
Available for Node.js
Works with any markup
Compatible with any JavaScript framework

Hk classes: 'hk_classes' is a set of C++ libraries for rapid development of database applications with all features a modern database application should have, like forms and reports. hk_classes is database and GUI independent. It also includes command line tools to use hk_classes in scripts.

Hoard: Hoard is a fast, scalable and memory-efficient allocator for multiprocessors. It solves the heap contention problem caused when multiple threads call dynamic memory allocation functions like malloc() and free() (or new and delete), and can dramatically improve the performance of multithreaded programs running on multiprocessors. it is a drop-in replacement for malloc(), etc., so you don't have to change your source code.

HotSwap: This is a candidate for deletion: Links broken. Email to maintainer broken. Poppy-one (talk) 16:46, 2 August 2018 (EDT) HotSwap provides a robust library for updating the implementation of an object at runtime (aka hotswapping). This is achieved through recompilation, dynamic class reloading, and object state migration throughout the life of an application. Hotswapping makes Java feel more like an interpreted language than a compiled language; it is fundamentally useful for runtime development of an application (application evolution or incremental development).

Hy: Hy is a Lisp front-end to the Python AST / Bytecode. This allows you to use the Python VM just as Clojure uses the Java VM. Hy is special, since not only can Hy invoke Python, but Python can also interop with Hy in a clean way.

IPStream: 'IPStream' is a C++ crossplatform library for working with TCP/UDP protocols. It is multithreaded and relies on the Boost libraries for this (particularly Boost.Thread It makes working with TCP/UDP easier due to serialization operators usage.

IPlib: A Python module for converting and managing pairs of address/netmask in the CIDR notation. Some example scripts ('ipconv', 'nmconv' and 'cidrinfo') are included.

ISO Master: ISO Master is a graphical editor for ISO images with support for ISO9660, RockRidge, and Joliet file names. It is useful for extracting, deleting, or adding files and directories to or from an ISO image. It is based on the bkisofs and GTK2 libraries.

ISODate: This module implements ISO 8601 date, time and duration parsing. The implementation follows ISO8601:2004 standard, and implements only date/time representations mentioned in the standard. If something is not mentioned there, then it is treated as non existent, and not as an allowed option. For instance, ISO8601:2004 never mentions 2 digit years. So, it is not intended by this module to support 2 digit years. (while it may still be valid as ISO date, because it is not explicitly forbidden.) Another example is, when no time zone information is given for a time, then it should be interpreted as local time, and not UTC. As this module maps ISO 8601 dates/times to standard Python data types, like date, time, datetime and timedelta, it is not possible to convert all possible ISO 8601 dates/times. For instance, dates before 0001-01-01 are not allowed by the Python date and datetime classes.

IbPy: IbPy is a third-party implementation of the API used for accessing the Interactive Brokers on-line trading system. IbPy implements functionality that the Python programmer can use to connect to IB, request stock ticker data, submit orders for stocks and options, and more.

Id3lib: 'id3lib' is a software development library for reading, writing, and manipulating meta-information in digital audio files. Currently id3lib supports reading and writing of ID3v1 and ID3v2 tags and other associated tasks such as conversion between tagging formats, identifying valid tags, converting sizes, synchronisation, compression, and padding. It also has a high level of support for the ID3v2 standard, to produce tags that will continue to comply with the standard well into the future.

Ilib: Ilib is an image manipulation library for developers. It's capable of reading and writing images (PPM/PGM, PNG, JPEG, GIF, XPM, BMP) and many drawing functions including drawing lines and text using any BDF (X11) font. It's great for generating GIFs/PNGs from a CGI or generating graphs.

ImLib3D: ImLib3D is a C++ library and visualization system for 3D (volumetric) image processing. It provides a library for developing image processing software in C++, an executable, for using image processors from the command line, and an executable, which is an interactive GUI for 3D volumetric visualization.

Image Fusion Library: Library for image fusion (i.e. combining several images while preserving as much information from each image as possible) written in C++. Fast and memory efficient.

Interpcom: 'interpcom' is a command interpreter library for building scientific applications. It contains an expression evaluator that can be used to parse the arguments of the commands. It is possible to define "objects" which are arrays of numbers having a name, and structures. The program also supports threads (several programs running simultaneously), and it is very easy to add new commands.

Intervals: The "Interval Arithmetic for Ada" library provides an implementation of intervals for Ada. It includes arithmetic and relational operations.

Ipfs: pleas add

Irc: This library is intended to encapsulate the IRC protocol at a quite low level. It provides an event-driven IRC client framework. It has a fairly thorough support for the basic IRC protocol, CTCP and DCC connections.

Ivy-Python: Links & maintainer email broken. Changed homepage to archive.org link. Poppy-one (talk) 12:26, 6 August 2018 (EDT) Ivy is a lightweight software bus for quick-prototyping protocols. It allows applications to broadcast information through text messages, with a subscription mechanism based on regular expressions.

JACK Audio Connection Kit: JACK is a low-latency audio server. It can connect a number of different applications to an audio device, as well as allowing them to share audio between themselves. Its clients can run in their own processes (i.e., as normal applications), or can they can run within the JACK server (as a "plugin"). JACK is different from other audio server efforts in that it has been designed from the ground up to be suitable for professional audio work. This means that it focuses on two key areas: synchronous execution of all clients, and low latency operation.

JBIG-KIT: JBIG-KIT implements a highly effective data compression algorithm for bi-level high-resolution images (ie faxes or scanned documents). It provides a portable C library of compression and decompression functions with a documented interface that can easily be included into image or document processing software. JBIG-KIT also provides ready-to-use compression and decompression programs with a simple command line interface (similar to the converters found in netpbm). It implements the specification ISO 11544 and ITU-T T.82, commonly referred to as the "JBIG1 standard".

JCIFS: 'jCIFS' is an SMB client library that follows the CIFS specification supporting Unicode, named pipes, batching, multiplexing IO of threaded callers, encrypted authentication, full transactions, domain/workgroup/host/share/file enumeration, NetBIOS sockets and name services, the smb:// URL protocol handler, a java.io.File like API, RAP calls, NTLM HTTP Authentication, and more.

JIGS: JIGS (Java Interface for GnuStep) allows Java programmers to use the GNUstep libraries from Java, but it is more than a set of bindings for GNUstep from Java: it takes advantage of the fact that Objective-C and Java are very similar languages to make it possible to use Objective-C classes from Java using exactly the same API (and vice versa). Moreover, JIGS can generate automatically wrappers for your own Objective-C GNUstep libraries.

JMusic: 'jMusic' provides a library of classes for generating and manipulating music, and is a solid framework for computer assisted composition in Java. jMusic supports composers by providing a music data structure based upon note/sound events, and methods for working with that musical data. jMusic can read and write MIDI files, audio files, and its own .jm files. jMusic is designed to be extendible, so you can build on its functionality by programming in Java to create your own music composition tools.

JSAM

JSON Storage Access Methods is a library for storage and retrieval of JavaScript Object Notation (JSON) encoded objects. Backends include:

file: directory of plain text JSON files
rcs: directory of plain text JSON files under RCS
cvs: directory of plain text JSON files under CVS (not tested)
svn: directory of plain text JSON files under SVN (not tested)
sqlite: object trees stored in an SQLite3 database
mysql: object trees stored in a MySQL database (barely tested)
Lookup methods include:
Collections: a jQuery-like method-chained interface
XPath-like query language (only supported for SQL backends)

JSONgrep: JSONgrep is a shell tool for extracting values from JSON documents. It supports shell-like globbing for property names, and emits the matched values separated by newlines.

JSONlib2: This is yet another library for reading/writing json. The goal is to be API compatible with simplejson, except that it is written purely in C and is thus 5x-20x faster for both encoding and decoding, depending on the data.

Jamdict: Jamdict is a command-line application as well as a Python 3 package for querying and managing Japanese dictionaries and resources (Jim Breen's JMdict, KanjiDic2, KRADFILE, JMnedict)

Jaraco.classes: Utility to construct Python classes.

Jaraco.collections: Additional classes and models to Python stdlib's collections.

Jaraco.functools: Additional functions to Python's stdlib.

Jaraco.logging: Parses logging into arguments.

Jaraco.text: Module for text manipulation.

Javascript Crypto Library: Provides web developers with an extensive and efficient set of cryptographic functions. The library aims to obtain maximum execution speed while preserving modularity and reusability. Includes the fastest JavaScript implementation of AES.

JobLib

A set of tools to run Python scripts as jobs; namely: persistence and lazy re-evaluation (between make and the memorize pattern), logging, and tools for reusing scripts. Joblib provides a set of tools to run Python scripts as jobs; namely:

1. persistence and lazy re-evaluation (between make and the memorize pattern),
2. logging,
3. tools for reusing scripts.
The original focus was on scientific-computing scripts, but any long-running succession of operations can profit from the tools provided by joblib.

Json-Type: Json-Type is a fully-compliant RFC 8259 and ECMA 404 push parser -- validating UTF8 as per the Unicode Standard 8.0.0 -- and a very efficient on-the-fly type checker of JSON text. Json-Type has a two-tiered structure: the core of its functionality is enclosed in a dynamic library, while the front-end, the main program assembles the variety of use-cases of the library into a convenient and comprehensive command line interface.

JsonPickle: Python library for serializing any arbitrary object graph into JSON. It can take almost any Python object and turn the object into JSON. Additionally, it can reconstitute the object back into Python.

Jsonrpclib

This library implements the JSON-RPC 2.0 proposed specification in pure Python. It is designed to be as compatible with the syntax of xmlrpclib as possible (it extends where possible), so that projects using xmlrpclib could easily be modified to use JSON and experiment with the differences. It is backwards-compatible with the 1.0 specification, and supports all of the new proposed features of 2.0, including:

Batch submission (via MultiCall)
Keyword arguments
Notifications (both in a batch and 'normal')
Class translation using the 'jsonclass' key.

Jwsmtp: 'jwsmtp' is a C/C++ library that facilitates sending email programmatically. It supports attachments, multiple recipients, Cc/Bcc recipients, both LOGIN and PLAIN authentication, and HTML and plain text formatting. The package does MX lookups or can send directly to an SMTP server.

KATCP: Karoo Array Telescope Communication Protocol library.

KSS (Kinetic Style Sheets) framework: KSS enables you write rich Ajax applications without having to code Javascript. It does this by using a CSS like resource, this is called a KSS file. All that you as a developer need to do is write files like these and implement server side Python. This Python package contains the Javascript engine and the server side infrastructure. The package forms the base for integration with specific web development frameworks. To see if there is support for your framework go to the KSS website.

KSquirrel-libs: ksquirrel-libs is a set of codecs for the KSquirrel image viewer. It supports dozens of image formats. Including: Windows bitmaps (.bmp), Compuserve GIF (static, animated), Windows icons (.ico), JPEG, JPEG2000, ZSoft PCX, Scalable Vector Graphics (.svg), Windows Metafile (.wmf), Portable Network Graphics, Portable Any Map (.pnm, .ppm, .pgm, .pbm), Sun Raster File (.ras), SGI, Targa (.tga), Tagged Image File Format, X Bitmaps (.xbm), X Pixmaps (.xpm), OpenEXR (.exr), PIX, SUN Icons, X Window Dump (.xwd), Photoshop PSD (RGB, CMYK, Greyscale, Indexed), FLI Animation, X cursors (static, animated), Wireless Bitmap, Photos from different cameras (CRW), Quake2 texture (.wal), HalfLife model (.mdl),* Commodore 64 KOALA (.koa), Dr. Halo CUT, Radiance HDR image (.hdr), Scitex CT, Homeworld LIF, MTV Ray tracer, AVS X, RAWRGB (internal, simple 24 or 32-bit format).

Kbde: 'kbde' is a keyboard emulator whose goal is to provide tools for emulating keyboard input on keyboardless (x86) computers. It includes an emulator driver, a user-space program, and a library which make it easy to write applications that can create keyboard input emulation.

Kdtree: kdtree is a simple, easy to use C library for working with kd-trees. Kd-trees are an extension of binary search trees to k-dimensional data. They facilitate very fast searching, and nearest-neighbor queries. This particular implementation is designed to be efficient and very easy to use. It is completely written in ANSI/ISO C, and thus completely cross-platform.

Kepler

Kepler is a library of C routines for astronomical calculations. It features the following:

The entire VSOP87 theory for calculating the positions of the eight planets.
The entire ELP 2000-82B theory for calculating the position of the Moon.
An analytical theory for calculating Pluto's position for the period 1700AD-2100AD.
The ability to convert osculating orbital elements to heliocentric coordinates.
The latest IAU 2006 precession and IAU 2000A nutation models.
Routines for calculating sidereal time using the current IAU resolutions.
An implementation of the Ron/Vondrak theory of annual aberration.
Routines for Julian date calculations.
Routines for coordinate transformations, rotations and parallax corrections.

Kexi: KEXI is a visual database application builder tool by KDE, designed to fill the gap between spreadsheets and database solutions requiring more sophisticated development. KEXI can be used for designing and implementing databases, data inserting and processing, and performing queries.

KiCad: KiCad is electronic design automation (EDA) software made for designing schematics of electronic circuits and printed circuit boards (PCB). KiCad is developed by the KiCad Developers Team, and features an integrated environment with schematic capture, bill of materials list, PCB layout and much more. KiCad is cross-platform, written with WxWidgets and runs on FreeBSD, GNU/Linux, Microsoft Windows and Mac OS X. A lot of component libraries are available. Also migrating tools for components are available (from other EDA software tools). File formats are plain text and well documented, which is good for CVS or Subversion and to make automated component generation scripts. Multiple languages are supported, such as English, Portuguese, Spanish, Czech, Polish, French, German, and Russian. The 3D PCB viewer use 3D model from Wings3D CAD.

Kiss FFT: Kiss FFT is a small and simple FFT library. It has no complicated platform-specific optimizations, can do either fixed or floating point with just a recompile, and is efficient enough for all but the most demanding applications.

Kiwi: Kiwi consists of a set of classes and wrappers for PyGTK that were developed to provide a sort of framework for applications. Fully object-oriented, and roughly Smalltalk's MVC, Kiwi provides a simple, practical way to build forms, windows and widgets that transparently access and display your object data. Kiwi was primarily designed to make implementing the UI for Stoq easier.

Klimt: Klimt is a 3D library, targeted for PDAs and mobile phones. Its API is very similiar to that of OpenGL and OpenGL ES. We do not claim conformance with these APIs. Nevertheless, Klimt is able to run Coin3D, a large scene-graph base library that builds on top of OpenGL. This product is based on the published OpenGLÃÂ® ES API, but is not an implementation which is certified or licensed by Silicon Graphics, Inc. under the OpenGLÃÂ® ES API. OpenGLÃÂ® and OpenGLÃÂ® ES are registered trademarks of Silicon Graphics, Inc. in the United States and/or other countries worldwide. Klimt is independent of Silicon Graphics, Inc.

Kniffel: 'Kniffel' features a library for dealing with first order predicate logic formulas and tools (command line and CGI versions included) that convert first order predicate logic to LaTeX, graphviz dot, and ASCII formats.

Kyoto Cabinet

Kyoto Cabinet is a library of routines for managing a database. The database is a simple data file containing records, each is a pair of a key and a value. Every key and value is serial bytes with variable length. Both binary data and character string can be used as a key and a value. There is neither concept of data tables nor data types. Records are organized in hash table. Kyoto Cabinet is developed as the successor of Tokyo Cabinet on the following purposes. They are achieved and Kyoto Cabinet replaces conventional DBM products.

improves space efficiency : smaller size of database file.
improves parallelism : higher performance in multi-thread environment.
improves portability : abstraction of the lower layer to support non-POSIX systems.
improves usability : simplified API, object-oriented design.

LAPACK: LAPACK is written in Fortran77 and provides routines for solving systems of simultaneous linear equations, least-squares solutions of linear systems of equations, eigenvalue problems, and singular value problems. The associated matrix factorizations (LU, Cholesky, QR, SVD, Schur, generalized Schur) are also provided, as are related computations such as reordering of the Schur factorizations and estimating condition numbers. Dense and banded matrices are handled, but not general sparse matrices. In all areas, similar functionality is provided for real and complex matrices, in both single and double precision.

LIBrary for SECure ReMoval: Libsecrm (LIBrary for SECure ReMoval of files) is a library which ensures secure data deleting by intercepting calls to some C library functions and replacing them by its own substitutes. The data that would be deleted from a file is first securely wiped, then the original functions are called. Libsecrm also takes care of memory security - some of the memory allocation functions are intercepted, and the allocated memory is wiped before passing it to the calling program.

LIPS Scheme: LIPS is a powerful Scheme based lisp interpreter written in JavaScript. The name is a recursive acronym which stands for LIPS Is Pretty Simple. The interpreter has very good integration with JavaScript.

LTI-Lib: The LTI-Lib is an object oriented library with algorithms and data structures frequently used in image processing and computer vision. It was developed at the RWTH-Aachen University as a part of many research projects on computer vision dealing with robotics, object recognition, sign language, and gesture recognition. It provides an object oriented C++ library that includes fast algorithms, which can be used in real applications.

LTchinese: ltchinese - A library of utilities for the Chinese language (pinyin, zhuyin, encodings, phonetics, etc.) from http://lost-theory.org.

LUCAS: Lets users configure network servers and/or services centrally The traditonal way to manage UN*X boxes is doing configuring work on a per host basis. While this works quite well on single host setups, it quickly becomes a nightmare when it comes to clustered systems, load balancing systems or server farms, where configurations have to be shared/spread/replicated between several more or less independant machines. The LUCAS project aims at creating a framework, where configuration data may be conviniently kept in an central LDAP database and is automatically send to the desired destination from there.

LXML: Powerful and Pythonic XML processing library combining libxml2/libxslt with the ElementTree API. lxml is a Pythonic, mature binding for the libxml2 and libxslt libraries. It provides safe and convenient access to these libraries using the ElementTree API. It extends the ElementTree API significantly to offer support for XPath, RelaxNG, XML Schema, XSLT, C14N and much more.

LZO: 'LZO' is a portable lossless data compression library. It offers pretty fast compression and very fast decompression. Decompression requires no memory. In addition there are slower compression levels achieving a quite competitive compression ratio while still decompressing at this very high speed.

Lcn2-calc

calc is an arbitrary precision arithmetic system that uses a C-like language. It's useful as a calculator, an algorithm prototype, and as a mathematical research tool. More importantly, calc provides a machine-independent means of computation. Its features include:

Arbitrary precision integers and floating-point, fractions and complex values
Logarithm, numeric, trig, hyperbolic functions
C-like syntax
calc shell scripts, resource files, linkable program library
User defined finctions and function loading
Over 283 built-in functions plus hooks for built-in custom extensions
Arrays, lists, dynamic strings, matrices, associate arrays, objects
Numeric, relational, boolean and variable access operators
Extensive string and binary block memory builtin functions
Matrix inversion, determinant, and other matrix operations
Fast and cryptographic pseudo-random numbers, cryptographic hashes
Factoring, primality tests, pi(x), multiplicative inverse, modular exp
Bernoulli numbers, Euler numbers, Catalan numbers
Uses REDC, splint-point and other high speed multi-precision algorithms
Extensive regression test suite
Resource functions: large prime tests, factoring, quaternions, etc.
File I/O, multi-precision printf and scanf, stdio-like functions
GNU Readline, user & system startup scripts, Emacs-style line editing
Online help

Ldns: 'ldns' is a library with the aim of simplifying DNS programing in C. It is heavily based upon the Net::DNS module from Perl.

Leg: Leg (Libraries and Engines for Games) is a set of libraries for game engines and game development. In addition to the libraries, it also includes resource editors designed to make game creation easier. The package is designed to be generic and modular, supporting many different styles of games.

Lib rHarris: A Python Internet Programming Library. lib_rharris is a modest Python library for pulling, parsing and pickling remote web page data and for related net-aware tasks.

LibCGI: LibCGI is a library to assist in the making of CGI applications in C. It supports string manipulation, linked lists, cookies, sessions, GET and POST methods, and more.

LibConfigpp: 'libConfig++' is a portable and flexible C++ library for reading configuration files written in C-style syntax. The syntax of the package's configuration file is like C++, so it will be familiar. You set up program variables from config via a simple and safe interface. Type control is made during compilation, which helps avoid invisible errors in sources. You can define your own types and the library will control this when you setup variables from config file. The library supports multifile configuration. Token "#include" lets you merge one config file with other.

LibDSP: 'libDSP' is a C++ library of digital signal processing functions including standard vector operations, digital filtering and transforms. It also includes wrappers for C.

LibGTop: A library that fetches information about the running system such as cpu and memory usage, active processes etc. The information is taken directly from the /proc filesystem.

LibGlass: 'libGlass' is a scalable set of components that applications use to perform distributed computing. Applications are built by reusing the available components as needed. One of the major goals of Glass is to be a user-friendly framework that is suitable for both new applications and legacy code (most available solutions for distributed computing require a substantial rewrite of legacy code).

LibGringotts: 'libGringotts' is a small, thread-safe C library originally developed for Gringotts. Its purpose is to encapsulate data in an encrypted and compressed file. It uses strong cryptographic algorithms (RIJNDAEL 128/256, SERPENT, TWOFISH, CAST256, SAFER+, LOKI97, and 3DES for encryption, and SHA1 and RIPEMD-160 for hashing) to ensure that data is as safe as possible, and that the user has complete control over all encryption, hashing, and compression algorithms used in the process. It also provides functions for encrypting temporary files and to securely manage memory. It is based upon libmcrypt and mhash, and supports pkgconfig.

LibID3: 'libID3' is a small C library to parse ID3 tags. It uses as little memory as possible, and has both DOM- and SAX-like models.

LibRadtran: Functions and programs to calculate solar and thermal radiation in the Earth's atmosphere.

LibStroke: LibStroke is a stroke translation library. Strokes are motions of the mouse that can be interpreted by a program as a command. Strokes are used extensively in CAD programs to select tools or perform actions; they are an extremely natural human-computer interface.

LibSysCtr: LibSysCTr intercepts system call functions on a GNU/Linux system. Process monitoring and sandboxing are just two of its potential uses. LibSysCTr uses the ptrace(2) functionalities by monitoring and reporting events to the library caller. LibSysCTr is callback driven, which means the user initializes the library with systr_init_library(), registers the system calls he wants to monitor with systr_trace_syscall(), and calls systr_run() to start receiving events in the form of callback invocation. For each intercepted system call, two calls to the registered callback function are performed: one during the system call entry, before the system call iteself will be executed by the kernel, and one after the kernel has processed the system call (right before returning the userspace). Utility functions are supplied to, retrieve information about the process, get/set the system call parameters, and read/write the monitored process address space.

LibTAP

'libTAP' (The Architectural Playground) is a prototyping system for virtual reality and augmented reality applications. It runs on a variety of platforms. RAP (rapid application prototyping) is done through the Lua interface, which mirrors the C++ namespace as closely as possible. libTAP has a small but distinctive feature set, focused on prototyping of realtime 3D simulations.

Also known as 'Tacitpixel'.

LibTMCG: LibTMCG is a C++ library for creating secure electronic card games. The most remarkable feature is the absence of a trusted third party (TTP), i.e. neither a central game server nor trusted hardware components are necessary. With the present library there is no need for an independent referee, because the applied protocols provide a basic level of confidentiality and fairness by itself. Consequently, the library is well-suited for peer-to-peer (P2P) environments where no TTP is available. Of course, we cannot avoid that malicious players share information about their private cards, but the protocols ensure that the shuffle of the deck is performed randomly (presumed that at least one player is honest) and thus the cards will be distributed uniformly among the players. Further, no coalition can learn the private cards of a player against his will (except for trivial conclusions). The corresponding cryptographic problem, actually called Mental Poker, has been studied since 1979 by many authors. LibTMCG provides the first practical implementation of such protocols.

LibTPT: TPT is a template scripting language implemented in C++ and designed to be integrated with C++ programs. The TPT interpreter runs in one pass, so there is no expensive compilation stage. The language relies on C++ for I/O, making TPT portable, small, and fast. There are no bulky modules to include. TPT does not execute as a program or script. The LibTPT parser transforms TPT templates into text. The parser, which integrates with your C++ code through a simple class API, is small and fast, focusing on functionality instead of rich feature sets. Uses include on-the-fly HTML, source code generation, or in any situation where there is a need to generate customized text.

LibTomCrypt: LibTomCrypt is a cryptographic toolkit that gives developers an array of well known published block ciphers, one-way hash functions, chaining modes, pseudo- random number generators, public key cryptography, and many other routines. It has been designed from the ground up to be very simple to use. It has a modular and standard API that allows new ciphers, hashes, and PRNGs to be added or removed without change to the overall end application. It features easy to use functions and a complete user manual which has many source snippet examples.

LibXDiff: The LibXDiff library implements basic and yet complete functionalities to create file differences/patches to both binary and text files. The library uses memory files as file abstraction to achieve both performance and portability.

LibYAML: A YAML 1.1 parser and emitter written in C.

Libao: 'Libao' is a cross-platform audio library that lets programs output audio using a simple API on a wide variety of platforms. It currently supports null output, WAV files, AU files, OSS (Open Sound System), esd, ALSA, AIX, Sun/NetBSD/OpenBSD, IRIX, and NAS (Network Audio Server).

Libassh: libassh is a free software library written in C that implements the Secure Shell protocol version 2. It enables writing ssh2 client and server applications using an event based API.

Libbatch: 'libbatch' implements typical batch process functions, including common SQL operations, functions for working with temp files and for using config files, logging functions (with severity, priority, colors, and verbosity), and functions that work with files and directories.

Libbnr: 'libbnr' implements of the Bayesian Noise Reduction (BNR) algorithm. All samples of text contain some degree of noise (data irrelevant to accurate statistical analysis of the sample where removal of the data would result in a cleaner analysis). The Bayesian noise reduction algorithm ensures cleaner machine learning by providing more useful data, which ultimately leads to better sample analysis. With the noisy data removed from the sample, only data relevant to the classification is left. 'libbnr' can be linked in with a classifier and called using the standard C interface.

Libbraille: 'Libbraille' makes it easy to access Braille displays and terminals. It can write text on a Braille display, directly draw Braille dots, or get the value of pressed keys. It is compatible with a wide range of Braille displays, and can autodetect some of them. The README, included with the distribution, lists the Braille dispays that 'libbraille' supports.

Libburn: Libburn is a library for reading and writing optical discs. Supported media are: CD-R, CD-RW, DVD-RAM, DVD+RW, DVD+R, DVD+R/DL, DVD-RW, DVD-R, DVD-R/DL, BD-R, and BD-RE.

Libc ,: The GNU C Library is the standard C library of the GNU system. It defines the system calls and other basic functionality necessary to write programs in the C language. It handles low-level functionality that communicates with the kernel, such as process and file management, as well as higher-level functionality such as string manipulation or command-line argument handling. In GNU/Linux distributions, the C library works with the Linux kernel to implement the operating system behavior seen by user applications. In GNU Hurd, it works with a microkernel and Hurd servers. The GNU C Library implements much of the POSIX.1 functionality in the GNU system, using configurations i[4567]86-*-gnu. The current Hurd support requires out-of-tree patches that will eventually be incorporated into an official GNU C Library release. It is one of the most important components of the GNU operating system and its variants GNU/Linux. It is used by almost all C programs and provides the most essential program interface.

Libcdaudio: 'libcdaudio' is a library designed to provide functions to control operation of a CD-ROM when playing audio CDs. It also contains functions for CDDB and CD Index lookup.

Libcddb: Libcddb is a library that implements the different protocols (CDDBP, HTTP, SMTP) to access data on a CDDB server. It tries to be as cross-platform as possible.

Libcdio

Libcdio is a library for CD-ROM and CD image file access. It allows the developer to add CD access to an application without having to worry about the OS- and device-dependent properties of CD-ROM or the specific details of CD image formats. It includes pycdio, a Python interface to libcdio, and libcdio-paranoia, a library providing jitter-free and error-free audio extraction from CDs. The libcdio package also contains a number of utility programs, including:

cd-info, displays CD information ;
cd-drive, decribes CD-ROM/DVD drive characteristics ;
cd-read, performs low-level block reading of a CD or CD image ;
iso-info, displays ISO-9660 information from an ISO-9660 image ;
iso-read, extracts files from an ISO-9660 image ;
cd-paranoia - extracts audio from a CD in a jitter.

Libcfg+: 'Libcfg+' is a C library with multi-command line and configuration file parsing. Users can set up special properties such as quoting characters, deliminator strings, file comment prefixes, multi-line postfixes, and more. 'Libcfg+' supports data types such as booleans, integers, decimal numbers, and strings with many additional data type flags (such as multiple values for a single option).

Libchromiumcontent: libchromiumcontent builds the Content Module of Chromium as a shared library (libcc). This allows other projects (such as Electron) to use the Content Module without needing to use or build Chromium itself.

Libcisco: 'libcisco' provides an API for accessing and configuring Cisco network equipment over a telnet session. kIt works making changes through the CLI of the target system (e.g. a privileged EXEC session under IOS). These library routines greatly simplify the process of writing scripts to make configuration changes and perform common tasks.

Libcomcom: Spawn an OS command with given input and receive its output. The main feature of this library is deadlock avoidance. (Deadlock in this case is when your program can't write to the input of another program because of waiting for its output which does not happen because of no input, so a vicious circle leading to infinite waiting time.) API docs: https://vporton.github.io/libcomcom-docs/ There are also Java and D wrappers. Please help to port it to Windows.

Libcroco: The Libcroco project is an effort to build a generic Cascading Style Sheet (CSS) parsing and manipulation toolkit that can be used by GNOME applications in need of CSS support. Its current features include a parser module that provides both a SAC-like API and a CSSOM-like API, a CSS2 selection engine, and an XML/CSS layout/rendering engine.

Libcsdbg: Libcsdbg is a C++ exception stack tracer. When an exception is thrown, caught and handled, libcsdbg offers the tools to create and process the exception stack trace, the path the exception has propagated up the call stack, unwinding it, up to the section were it was handled. The traces are detailed with demangled function signatures and additional addr2line info (the source code file and line that each function was called). Libcsdbg will perform flawlessly with single and multi-threaded (or multi-process) programs, with any dynamically linked shared object (DSO - Dynamic Shared Object) and with any statically linked library. Additionally, libcsdbg helps the developer/tester create sophisticated stack traces of any thread, at any given moment during a process execution, as a snapshot of the runtime call graph. This is very useful in cases of fatal errors, reception of terminating signals or process abortion/termination (such as segmentation faults). libcsdbg can use all the well-known objective code file formats (a.out, elf, coff, ecoff, etc.) and can easily be used as the base for your own instrumentation code. libcsdbg transparently loads the symbol tables of the chosen dynamic libraries and of the executable, demangles function symbols to complete signatures, and binds function names to runtime addresses (even for the DSO symbols).

Libcvs-perl: This libcvs is meant to facilitate writing tools around CVS. It does this by providing libraries which programmers can access directly in their tools. The current focus of the project are libraries which use the cvsclient protocol to talk to a cvs server and are targeted at the development of client applications. Libraries which understand the RCS file format and provide fast server side access are a future possibility. An ObjectiveC version is also underway.

Libcwd: Libcwd is a full-featured, professional, well-documented library to support C++ developers with debugging their applications. It includes support for ostream-based debug output, custom debug channels and devices, powerful memory allocation debugging, run-time sourcefile:linenumber information, and demangled type names of variables. Libcwd is thread-safe.

Libdaemon: 'libdaemon' is a lightweight C library that eases the process of writing UNIX daemons. It contains a daemonizing fork() wrapper, a powerful syslog() wrapper, PID file management, and signal serialization.

Libdecodeqr: "libdecodeqr" is a C/C++ library for docoding QR code, which based on JIS X 0510 and ISO/IEC18004. This library is able to decode miscellaneous images those are taken with a file, with a webcam, with a scanner, and so on.

Libdodo: project page This project, c++ cgi framework, is on itÃâs start, but it has much ideas and wish to implement them! It provides wide abilities for cgi programming! But also you can use it not only as cgi. It has very usefull modules to operate with databases, xml, threads, input/output, regexp, time and so on. Provides hooks, system tools, exceptions, and some more. libdodo - c++ library, cgi framework that provides different extensions in c++. database, xml, sockets, disk, stdin/stdout operations, regexp, cgi interface, cgi

Libds: 'libds' is a cross-platform library to support simple networking, threads, as well as data structures. It allows code reuse for common data structures, such as linked lists and hash tables, as well as support for complex entities such as config files.

Libdvbcsa

A free implementation of the DVB Common Scrambling Algorithm with encryption and decryption capabilities.

Portability. This library has been successfully tested on different processors with 32 bits, 64 bits and 128 bits word width, little-endian and big-endian bytes ordering.
Performance. It comes in two flavors: a classical single packet implementation and a faster parallel bitslice implementation. The parallel implementation can take advantages of MMX, SSE or Altivec instruction sets. Parallel implementation can process Mpeg TS packets at 300Mbps or more on recent processors.

Libdvdcss: 'libdvdcss' is a cross-platform library for transparent DVD device access with on-the-fly CSS decryption. It is used by libdvdread and most DVD players such as vlc because of its portability and because it does not require your DVD drive to be region locked. It is simple (only seven functions in the API) and is intended to remain so.

Libecc: 'libecc' is a C++ elliptic curve cryptography library that supports fixed-size keys for maximum speed. Its goal is to become the first free library to let users generate safe elliptic curves, and to provide an important source of information for anyone with general interest in ECC.

Libelf: 'Libelf' lets you read, modify or create ELF files in an architecture-independent way. The library takes care of size and endian issues, e.g. you can process a file for SPARC processors on an Intel-based system. This library is a clean-room rewrite of the System V Release 4 library and is supposed to be source code compatible with it. It was meant primarily for porting SVR4 applications to other operating systems but can also be used as the basis for new applications (and as a light-weight alternative to libbfd). In 2019, the domain went down and links now point to the wayback machine.

Libevent: The libevent API executes a callback function when a specific event occurs on a file descriptor or after a timeout has been reached. It also supports callbacks due to signals or regular timeouts. It is meant to replace the asynchronous event loop found in event-driven network servers. 'libevent' currently supports /dev/poll, kqueue(2), select(2), poll(2) and epoll(4). It also has experimental support for real-time signals. The internal event mechanism is independent of the exposed event API, so a simple update of libevent provides new functionality without having to redesign applications. As a result, Libevent allows for portable application development and provides the most scalable event notification mechanism available on an operating system.

Libevent-Python: A CPython extension module wrapping the libevent library.

Libextractor: 'libextractor' extracts meta-data from files of arbitrary type. It uses helper-libraries to perform the actual extraction, and is trivially extendable by linking against external extractors for additional file types. Its goal is to provide developers of file-sharing networks, file managers, and WWW-indexing bots with a universal library to obtain meta-data about files. 'libextractor' includes the command "extract" that can extract meta-data from a file and print the results to stdout. Currently, it supports the formats HTML, PDF, PS, OLE2 (doc, xls, ppt), StarOffice, OpenOffice, MAN, DVI, MP3 (ID3v1, ID3v2), OGG, WAV, JPEG, GIF, PNG, TIFF, DEB, RPM, TAR(.GZ), ZIP, Real, QT, MPEG, RIFF (AVI), ASF, and ELF. It also detects various MIME types, and can compute hash functions (SHA-1, MD5, ripemd160). A Java binding (JNI) is available.

Libferris: 'libferris' is a virtual filesystem that exposes hierarchical data of all kinds through a common C++ interface. Access to data is performed using C++ IOStreams and Extended Attributes (EA) can be attached to each datum to present metadata. Ferris uses a plugin API to read various data sources and expose them as contexts and to generate interesting EA. Current implementations include Native (kernel disk IO with event updates using fam), xml (mount an xml file as a filesystem), edb (mount a berkeley database), ffilter (mount an LDAP filter string) and mbox (mount your mailbox). EA generators include image, audio, and animation decoders.

Libffcall: A collection of four libraries used to build foreign function call interfaces in embedded interpreters. avcall - calling C functions with variable arguments callback - closures with variable arguments as first-class C functions (a reentrant combination of vacall and trampoline) Formerly known as ffcall. vacall - C functions accepting variable argument prototypes trampoline - closures as first-class C functions

Libffi: The libffi library provides a portable, high level programming interface to various calling conventions. This allows a programmer to call any function specified by a call interface description at run time. FFI stands for Foreign Function Interface. A foreign function interface is the popular name for the interface that allows code written in one language to call code written in another language. The libffi library really only provides the lowest, machine dependent layer of a fully featured foreign function interface. A layer must exist above libffi that handles type conversions for values passed between the two languages.

Libfrser: Library implementing the serprog protocol used between flashrom and microcontrollers. This library runs on the microcontroller side.

Libgaudio: Libgaudio is a C/C++ library to facilitate easy incorporation of sound and sound effects into games. Samples are loaded into memory and playback is then triggered or stopped. The system mixes any number of concurrently playing samples together (up to a predefined maximum). It is also possible to include a background MP3 soundfile in the mix.

Libgcrypt: This is a general purpose cryptographic library based on the code from GnuPG. It provides functions for all cryptograhic building blocks: symmetric ciphers (AES, DES, Blowfish, CAST5, Twofish, Arcfour), hash algorithms (MD4, MD5, RIPE-MD160, SHA-1, TIGER-192), MACs (HMAC for all hash algorithms), public key algorithms (RSA, ElGamal, DSA), large integer functions, random numbers and a lot of supporting functions.

Libgenrics: Libgenerics is a c++ library that provides object services to analyse class type at runtime sharing the definitions between dynamic modules. It provides serialization services abstraction too. It's an absolute generic library.

Libgeotiff: 'libgeotiff' is a library (normally built on top of libtiff) for reading and writing coordinate system information from/to GeoTIFF files. It includes CSV files for expanding projected coordinate system codes into full projections, and definitions and examples of transforming the definitions into a form that can be used with the PROJ.4 projections library. It also includes the sample applications listgeo (for dumping GeoTIFF information in readable form) and geotifcp (for applying geotiff tags to an existing TIFF or GeoTIFF file).

Libgit2: Libgit2 is a portable, pure C implementation of the Git core methods provided as a re-entrant linkable library with a solid API, allowing you to write native speed custom Git applications in any language with bindings.

Libglade: Libglade lets a program to load its user interface from an XML description at runtime. The XML file format is that of the user interface builder GLADE, so libglade acts as an alternative to GLADE's code generation approach. You can change the look of your application without recompiling. Libglade also provides a simple interface for connecting handlers to the various signals in the interface (on platforms where the gmodule library works correctly, it is possible to connect all the handlers with a single function call). Once the interface has been started, libglade gives no overhead, so there is no performance tradeoff beyond the initial interface loading time.

Libgnomecanvas: 'libgnomecanvas' is the library for the GNOME canvas, an engine for structured graphics that offers a rich imaging model, high performance rendering, and a powerful, high-level API. It is based on the Tk toolkit's canvas widget, and is one of the essential Gnome libraries.

Libgphoto: 'libgphoto2' is a user space library which provides applications with camera independent access to almost 300 digital cameras. It contains more than 30 drivers to complement the drivers in your operating system kernel. There is a list of supported cameras on the home page.

Libgpiv: 'LIBGPIV' is a library for the (Digital) Particle Image Velocimetry technique (PIV), an image analyzing technology that obtains a velocity field from a fluid flow (gas or liquid) that has been seeded with small tracer particles or smoke. 'LIBGPIV' contains the core functions for image evaluation (resulting into estimators of particle image displacements, i.e. PIV data), validation (on peak-locking effects, erroneous vectors or outliers), post-processing, input/output functions, utility functions like memory allocation etc. The project is designed for maximum flexibility for extending and adapting the code for different applications.

Libgsf: 'libgsf' is a simple i/o library that can read and write common file types and handle structured formats that provide file-system-in-a-file semantics. There are some additional utilities for document centric applications.

Libgtkol: Libgtkol is a GTK C++ Object Layer based on the libgenerics abstract services and the Gtk API. It offers the developpers a complete intuitive object API without restricting access to the Gtk functionalities themselves.

Libgtop: Libgtop is a library used by gnome-system-monitor and the system monitor applet to get various bits of information about usage of system resources, processes, etc.

Libhdate: 'hdate' is a library for obtaining Hebrew dates, holy days, times of day, and torah reading sequences. It is based on 'hdate' program for the Hebrew calendar. It includes the hcal and hdate programs. 'hcal' prints a calendar with both common and Hebrew dates for the specified month, or the whole year if no month is specified. If no arguments are given, it prints the current month. 'hdate' translates the specified date to the Hebrew calendar. If no arguments are given, it uses today's date.

LibhtmlTemplate: This is a candidate for deletion: Links broken. No archive.org entry. Email to maintainer broken. Poppy-one (talk) 15:09, 6 August 2018 (EDT) 'libhtmlTemplate' is a very simple and small library to aid you on developing CGI applications, by separating the output from the code.

Libiconv: Libiconv converts from one character encoding to another through Unicode conversion (see Web page for full list of supported encodings). It has also limited support for transliteration, i.e. when a character cannot be represented in the target character set, it is approximated through one or several similar looking characters. It is useful if your application needs to support multiple character encodings, but that support lacks from your system.

Libidn: Libidn is an implementation of the Stringprep (with the Nameprep and Kerberos 5 profiles), Punycode and IDNA specifications defined by +the IETF Internationalized Domain Names (IDN) working group, used for internationalized domain names. The library contains a generic Stringprep implementation (including Unicode 3.2 NFKC normalization, table mapping of characters, and Bidirectional Character handling), two Stringprep profiles; Nameprep (for IDN) and Kerberos5, as well as a Punycode and IDNA. This project was formerly known as 'libstringprep.'

Libintl-perl: 'libintl-perl' is a library that supports message translation for Perl. Its interface is a superset of the gettext family of functions in C, and it uses the same file formats as GNU 'gettext', so you can use all the available 'gettext' tools to integrate internationalized Perl code into mixed-language projects.

Libisoburn: Libisoburn is a frontend for the libraries libburn and libisofs. It handles the creation, loading, manipulation and burning of ISO-9660 filesystem images. This library provides a low-level API, called libisoburn API, which encapsulates the API of libburn and libisofs, and a higher level API, called xorriso API which encapsulates the API of libburn, libisofs, and libisoburn, and is also used by the xorriso program itself.

Libisofs: Libisofs creates ISO 9660 (also known as ECMA-119) file system images which can either be written to POSIX file objects or handed over to libburn for being written directly to optical media. It can read metadata of ISO 9660 filesystems, manipulate them, and use them to produce new complete file system images or add-on images to be appended to the read file system image. Supported extensions to ISO 9660 are Rock Ridge, Joliet, AAIP, zisofs. This package is part of the Libburnia Project.

Libjpeg

This package implements a JPEG codec (encoding and decoding) alongside various utilities for handling JPEG data. It is written in C and distributed as free software together with its source code under the terms of a custom permissive (BSD-like) free software license. The original variant is maintained and published by the Independent JPEG Group (IJG). Provision is made for supporting all variants of these processes, although some uncommon parameter settings aren't implemented yet. There has been no provision for supporting the hierarchical or lossless processes defined in the standard. A set of library routines is provided for reading and writing JPEG image files, plus two sample applications "cjpeg" and "djpeg", which use the library to perform conversion between JPEG and some other popular image file formats. The library is intended to be reused in other applications. In order to support file conversion and viewing software, there is considerable functionality beyond the bare JPEG coding/decoding capability; for example, the color quantization modules are not strictly part of JPEG decoding, but they are essential for output to colormapped file formats or colormapped displays. These extra functions can be compiled out of the library if not required for a particular application. There is also "jpegtran", a utility for lossless transcoding between different JPEG processes, and "rdjpgcom" and "wrjpgcom", two simple applications for inserting and extracting textual comments in JFIF files.

Forks

Libjpeg-turbo: libjpeg-turbo is a fork of libjpeg that uses SIMD instructions (MMX, SSE2, AVX2, Neon, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, Arm, and PowerPC systems, as well as progressive JPEG compression on x86 and x86-64 systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal. On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines. In many cases, the performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs. libjpeg-turbo implements both the traditional libjpeg API as well as the less powerful but more straightforward TurboJPEG API. libjpeg-turbo also features colorspace extensions that allow it to compress from/decompress to 32-bit and big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java interface. libjpeg-turbo was originally based on libjpeg/SIMD, an MMX-accelerated derivative of libjpeg v6b developed by Miyasaka Masaru. The TigerVNC and VirtualGL projects made numerous enhancements to the codec in 2009, and in early 2010, libjpeg-turbo spun off into an independent project, with the goal of making high-speed JPEG compression/decompression technology available to a broader range of users and developers.

Libkml: This is a library for use with applications that want to parse, generate and operate on KML, a geo-data XML variant. It is an implementation of the OGC KML 2.2 standard. It is written in C++ and bindings are available via SWIG to Java and Python. This package contains the basic shared libraries for applications that use the KML format.

Liblo: 'liblo' is a simple, lightweight implementation of the OSC (Open Sound Control) protocol. Current features include a nonblocking mesage dispatcher (which is useful for single GUI-thread applications like Qt and GTK+), UNIX domain (FIFO) socket server/client support, TCP domain socket server/client support, the ability to stop server threads, and better regression tests.

Libmatheval: GNU libmatheval is a library that makes it possible to calculate mathematical expressions for given variable values and to calculate expression's derivative with respect to a given variable. The library supports arbitrary variable names in expressions, decimal constants, basic unary and binary operators and elementary mathematical functions. The library is stable and available for general use.

Libmemcache: 'libmemcache' is the C API for memcached(2), a high-performance, distributed memory object caching system.

Libmicrohttpd: Libmicrohttpd is a small, embeddable HTTP server implemented as a C library. It makes it easy to run an HTTP server as part of another application. The library is fully HTTP 1.1 compliant. It can listen on multiple ports, supports four different threading models, and supports IPv6. It also features security features such as basic and digest authentication and support for SSL3 and TLS.

Libmng: libmng is the reference library for MNG, the animation extension to the popular PNG format. It provides powerful animation features combined with PNG's robustness and patent freedom.

Libmodplug: libmodplug renders mod music files as raw audio data, for playing or conversion. libmodplug is based on the fast and high quality mod playing code written and released to the public domain by Olivier Lapicque. mod, .s3m, .it, .xm, and a number of lesser-known formats are supported. Optional features include high-quality resampling, bass expansion, surround and reverb.

Libmpeg2: libmpeg2 is a free library for decoding mpeg-2 and mpeg-1 video streams. Its main goals are:
* Conformance - libmpeg2 can decode all mpeg streams that conform to certain restrictions: "constrained parameters" for mpeg-1, and "main profile" for mpeg-2. * Speed - With typical video streams as found on DVD's, and doing only decoding with no display, you should get about 110 fps on a PIII/666, or 150 fps on an Athlon/950. This is less than 20 cycles per output pixel. * Portability - most of the code is in C; even platform-specific optimizations we always have a generic C routine to fall back on. This should be portable to all architectures. * Reuseability - we do not want libmpeg2 to include any project-specific code, but it should still include enough features to be used by very diverse projects.

Libnetdude: 'libnetdude' is the packet manipulation backend of the Netdude trace file editing framework. It lets you perform trace file manipulations at a much higher level of abstraction than code written directly for the pcap interface. It also supports plugins (dynamically loaded libraries) that can do whatever the programmer desires. When developers write their packet manipulation code as libnetdude plugins, other developers can use their tools. It provides data types and APIs for the most common situations when dealing with libpcap trace files: trace files of arbitrary size, packets, network protocols, packet iterators, and packet filters.

Libnids - NIDS E-component library: Libnids is a library that provides a functionality of one of NIDS (Network Intrusion Detection System) components, namely E-component. It means that libnids code watches all local network traffic, cooks received datagrams a bit (quite a bit), and provides convenient information on them to analyzing modules of NIDS. Libnids performs: a) assembly of TCP segments into TCP streams b) IP defragmentation c) TCP port scan detection

Libnofi: Python Library for managing notes. It can be used for easy development of note-taking applications. It supports some interesting features as tagging, smooth search, importing files and web pages, etc.

Libnomadii: The library for the suite that makes the driver that supports the Creative Nomad II, IIc and II MG under GNU/Linux running USB for file transfers and other operations.

Libnova: 'libnova' is a general purpose, double precision, celestial mechanics and astronomical calculation library. It can calculate aberration, nutation, apparent position, dynamical time, Julian day, precession, proper motion, sidereal time, solar coordinates (using VSOP87), coordinate transformations, planetary positions (Mercury - Neptune using VSOP87), planetary magnitude, illuminated disk and phase angle, lunar position (using ELP82), phase angle, elliptic motion of bodies (Asteroid + Comet positional and orbit data), asteroid + comet magnitudes, parabolic motion of bodies (comet positional data), orbit velocities and lengths, atmospheric refraction, rise/set/transit times, and semidiameters of the Sun, Moon, planets, and asteroids.

Libobjects

The GNU Objective C Class Library will implement the non-graphical Objective C objects of GNUstep. The GNUstep project is the Free Software Foundation's effort to implement a free-software version of NeXT's OpenStep standard. Libobjects is still in the development stages, but it already contains well over 60 classes of the GNUstep FoundationKit, and over 60,000 lines of code including both GNU and FoundationKit classes. The GNU classes in the library feature:

Collection objects for maintaining groups of objects,
strings for handling collections of characters,
Streams for I/O to various destinations,
Coders for formating objects and C types to byte streams,
ports for network packet transmission,
Distributed objects(remote object messaging),
pseudo-random number generators,
and time handling facilities.

This project is now a part of GNUStep.

Liboop: 'Liboop' provides a generic, callback-based event dispatch interface, and aims to ease the development of multiplexed, non-blocking, event-driven modular applications, components, and libraries under POSIX-based operating systems. It includes adapters for select(), poll(), the glib event loop, the TCL event loop, the W3C libwww, asynchronous DNS, and GNU readline.

Libopennet: 'Libopennet' lets developers open_net() files or URLs and get a file descriptor back that they can use to read data from. It supports HTTP (read-only) and FTP (read or write). It also comes with read_net() to do a forceful read(), and lseek_net() for calling lseek on the socket/file.

Liborigin

A library for reading OriginLab OPJ project files. FEATURES :

reads any worksheets with all columns
supports 4.1, 5.0, 6.0, 6.1, 7.0, 7.5 projects
full support for 7.5 project files (worksheets,functions,matrix,graphs,notes)

Libpcap: Library which provides a packet filtering mechanism based on the BSD packet filter (BPF). Most notably, tcpdump needs this to work, and there is also a perl module (still in beta) which can use this as well. In plain english, if you want to write your own network traffic analyzer, this is the place to start.

Libpcl: 'libpcl' is a Portable Coroutine Library implementation written in ANSI C. Coroutines can be used to implement cooperative threading among many tasks without overloading the OS with threads/processes. Since context switch between coroutines is very fast, certain applications might have performance gain in using this type of threading. It can use either the ucontext.h functionalities ( getcontext()/makecontest()/swapcontext() ) or the standard longjmp()/setjmp().

Libphish: Freshports link available but no download links available. All maintainer emails broken. Poppy-one (talk) 15:21, 6 August 2018 (EDT) Libphish is part of the Open Phishing Database project, an effort to create and maintain and open database of phishing sites in order to protect users, in addition to providing extensions to browsers that utilize the database. Libphish is a library which interacts with the Open Phishing Database, providing a consistent API which browsers and other programs can use to verify the safety and risk level of URLs.

Libping: Libping is a small C library designed to allow a programmer to make ICMP_ECHO requests directly from a script or program. The distribution includes pinger, a script-friendly utility linked to the library and intended to be invoked directly from scripts. Unlike most ping utilities, libping will timeout on both unreachable hosts and unreachable networks. It returns a value every time it is called, a feature which makes programming ICMP echo requests simpler and more reliable.

Libpropc++: 'libpropc++' is a template library for properties in C++ like this: widget.color = "red" will change the widget color to red. In class Widget use: prop::Property<Widget, Color, &Test::set_color, &Test::get_color> color; A future goal is to implement binding properties.

Libptp: 'libptp' is a Picture Transfer Protocol support library. It is used for downloading images from PTP cameras. It currently works with most modern Kodak, HP, SONY, Nikon, Canon, and other cameras that are PTP compatible (there is a full list on the Web site). It also works with some MP3 players, like the Kodak MP3. This package contains also 'ptpcam', the tool used to tweak camera properties.

Libptytty: Libptytty is a small library that offers pseudo-TTY management in an OS-independent way. It was created out of frustration over the many differences of PTY/TTY handling in different operating systems for use inside "rxvt-unicode". It also offers session database support (utmp and optional wtmp/lastlog updates for login shells) and supports forking after startup and dropping privileges in the calling process. It offers C++ and C-only APIs.

Libqalculate: Library for Qalculate and assorted modules.

Libqglviewer: 'libQGLViewer' is a C++ library which lets you quickly start the development of a new 3D application. It is designed for 3D developers, who can display and move around a 3D scene by simply providing the openGL orders that define their 3D geometry. The viewer is designed to be as general as possible and is not designed for a specific 3D application. It provides some useful classical functionalities such as a camera trackball, screenshot saving, mouse manipulated frames, stereo display, keyFrames and more. 'libQGLViewer' is not a 3D viewer that can be used directly to view 3D scenes in various formats; it is more likely to be the starting point for the coding of such a viewer.

Libquantum: 'libquantum' is a simulation of a quantum computer. It provides an interface for a quantum register and for all important quantum operations. An efficient model for decoherence allows an analysis of quantum computation in a realistic environment. Features include the simulation of arbitrary algorithms, high performance and low memory consumption and interfaces for quantum error correction (QEC) and the density operator formalism. The package includes implementations of Shor's factoring algorithm and Grover's search algorithm.

Libradix: C library for implementing Generic Radix sort and Radix sort of arbitrary length strings.

Library to create PostScript files: pslib is a C-library for generating PostScript files with little effort. It offers an easy way of generating PostScript text and graphics. Its text function are very sophisticated and support kerning, ligatures and some basic formatting. Hypertext functions are supported through pdfmarks which makes pslib in combination with ghostscript a viable alternative for libraries creating PDF.

Librep: librep is a shared library implementing a Lisp dialect that is lightweight, reasonably fast, and highly extensible. It contains an interpreter, byte-code compiler and virtual machine. Applications may use the interpreter as an extension language, or it may be used for standalone scripts.

Libressl

LibreSSL is a version of the TLS/crypto stack, forked from OpenSSL in 2014 with the goals of modernizing the codebase, improving security, and applying best practice development processes. This package also includes a netcat implementation that supports TLS. The source code is developed upstream by the OpenBSD project and regularly re-packaged for portable use. This package includes:

openssl, an utility which provides tools for managing keys and certificates
libcrypto: a library of cryptography fundamentals
libssl: a TLS library, backwards-compatible with OpenSSL
libtls: a new TLS library, designed to make it easier to write foolproof applications.

Librsb: librsb is a library for sparse matrix computations featuring the Recursive Sparse Blocks (RSB) matrix format. This format allows cache efficient and multi-threaded (that is, shared memory parallel) operations on large sparse matrices. The most common operations necessary to iterative solvers are available, e.g.: matrix-vector multiplication, triangular solution, rows/columns scaling, diagonal extraction / setting, blocks extraction, norm computation, formats conversion. The RSB format is especially well suited for symmetric and transposed multiplication variants. On these variants, librsb has been found to be faster than Intel MKL's implementation for CSR. Most numerical kernels code is auto generated, and the supported numerical types can be chosen by the user at build time. librsb implements the Sparse BLAS standard, as specified in the BLAS Forum documents.

Librsync: 'Librsync' provides checksum-based differencing. Currently its only application is rproxy, which provides diffs to previously cached Web pages and images in order to speed download time.

Libsafe: The exploitation of buffer overflow and format string vulnerabilities in process stacks are a significant portion of security attacks. 'libsafe' is based on a middleware software layer that intercepts all function calls made to library functions known to be vulnerable. A substitute version of the corresponding function implements the original function in a way that ensures that any buffer overflows are contained within the current stack frame, which prevents attackers from overwriting the return address and hijacking the control flow of a running program. The true benefit of using libsafe is protection against future attacks on programs not yet known to be vulnerable. The performance overhead of libsafe is negligible, it does not require changes to the OS, it works with existing binary programs, and it does not need access to the source code of defective programs, or recompilation or off-line processing of binaries.

Libshout: 'libshout' allows applications to easily communicate and broadcast to an Icecast streaming media server. It handles the socket connections, metadata communication, and data streaming for the calling application, and lets developers focus on feature sets instead of implementation details.

Libsigcpp: 'libsigc++' implements a full callback system for use in abstract interfaces and general programming. It is the most complete library of its kind with the ability to connect an abstract callback to a class method, function, or function object. It contains adaptor classes for connecting dissimilar callbacks and has an ease of use unmatched by other C++ callback libraries.

Libsigsegv: GNU libsigsegv is a library for handling page faults. A page fault occurs when a program tries to access a region of memory that is currently not available. Catching and handling a page fault is a useful technique for implementing garbage collectors, stack overflow handlers, persistent databases, and distributed shared memory.

Libslack: Libslack is a library of general utilities designed to make UNIX/C programming a bit easier on the eye. It was originally implemented as part of the daemon program. It is a small library with lots of functionality and is accurately documented and thoroughly tested. Good library naming conventions are not rigorously observed on the principle that common operations should always be easy to write and code should always be easy to read.

Libsmtp: This is a candidate for deletion: Links broken. No archive.org entry. Email to maintainer broken. Poppy-one (talk) 10:32, 10 August 2018 (EDT) Libsmtp allows programs to send mail directly through SMTP (no sendmail needed) and attaching and encoding mail in MIME standards. It is designed to be simple, secure, and small. It can send mail to multiple recipients in one go, and supports sending to CC and BCC recipients too.

Libsndfile: 'libsndfile' is a C library for reading and writing sound files such as AIFF, AU, WAV, and others through one standard interface. It can currently read/write 8, 16, 24 and 32-bit PCM files as well as 32 and 64-bit floating point WAV files and a number of compressed formats.

Libspectre: libspectre provides a convenient easy to use API for handling and rendering Postscript documents.

Libspf2: 'libspf2' implements the Sender Policy Framework, which verifies that the Sender address of an email message matches (according to some policy) the client IP address that submitted it. This is unlike the present SMTP standard for email, which allows anyone to forge anyone else's email address. SPF libspf2 is a complete and robust implementation of SPF which provides support for many MTAs. It is designed to be secure, correct, portable, flexible, and fast (in that order).

Libsrs2: 'libsrs2' is a Sender Rewriting Scheme library. SPF verifies that the Sender address of an email message matches (according to some policy) the client IP address that submitted itand rewrites this address to comply with SPF policy. The Sender Rewriting Scheme, or SRS, provides a standard for this rewriting that is not vulnerable to attacks by spammers.

Libstrfunc: Handy library for manipulating strings, string arrays, buffers, CGI forms, configuration files, textual templates, regular expressions, date/time parsing, et cetera. It handles base64, quoted-printable, url_encode, mime-words and other encoded data.

Libtar: Libtar is a C library for manipulating POSIX tar files. It handles adding and extracting files to/from a tar archive. Requires gcc, make, and zlib.

Libtasn1 ,: Libtasn1 is a library implementing the ASN.1 notation. It is used for transmitting machine-neutral encodings of data objects in computer networking, allowing for formal validation of data according to some specifications.

Libtecla: The Tecla library provides programs with interactive command line editing facilities, similar to those of the unix tcsh shell. It supports recall and editing of previously entered command lines, TAB completion of file names and application specific tokens, and in-line wild-card expansion of filenames. The optionally reentrant modules which perform TAB completion and wild-card expansion are also available separately for general use.

Libtheora: 'Theora' is Xiph.Org's first publicly released video codec, intended for use within the Ogg's project's Ogg multimedia streaming system. It is derived directly from the VP3 codec; currently the two are nearly identical, varying only in encapsulating decoder tables in the bitstream headers, although substantial changes and improvements may be expected in the future.

Libtiff: 'libtiff' provides support for the Tag Image File Format (TIFF), a widely used format for storing image data. This package includes a library (libtiff) for reading and writing TIFF, a small collection of tools for doing simple manipulations of TIFF images and documentation on the library and tools. A small assortment of TIFF-related software that has been contributed by others is also included. The library, along with associated tool programs, should handle most of your needs for reading and writing TIFF images on 32- and 64-bit machines.

Libtour: 'libtour' is a generic tournament processing library. The rules, participants, schedule, and results of a sporting tournament are defined in Scheme programming language and given to the library as input. Since 'libtour' only knows the structure of an event as it is roughly , it can therefore interpret any sporting tournament that conforms to the structure. A CLI application is provided as a reference client implementation. See http://freshmeat.net/projects/qtour/ for a Qt-based client.

Libtranslate: 'libtranslate' is a library for translating text and Web pages between natural languages. Its modular infrastructure lets users implement new translation services separately from the core library. It is shipped with a generic module that supports Web-based translation services (ie, BabelFish) and lets new services be added simply by adding a few lines to an XML file. The distribution also includes a command line interface.

Libtrash: 'libtrash' is a shared library which, when preloaded, intercepts calls to glibc's unlink() and rather than permanently deleting those files, moves them to a "trash can". Your mistakes (at least those of the "rm -rf dir /" class :-)) will no longer cause the loss of work or of your system's binaries.

Libundo: 'Libundo' is a simple, easy-to-use library which manages recording and playback of undo/redo information for application developers. It is intentionally simple so it can plug in to existing applications and require the writing of only a minimal amount of support code to support multi-level undo/redo.

Libuninum: libuninum is a library for converting Unicode strings to integers and integers to Unicode strings. Internal computation is done using arbitrary precision arithmetic, so there is no limit on the size of the integer that can be converted. Values are passed and returned as ASCII decimal strings, GNU MP mpz_t objects, or unsigned long integers. Auto-detection of the number system is provided. Group delimitation for output strings is fully controllable. Virtually all known number systems are supported.

Libunistring: Libunistring is a library providing functions to manipulate Unicode strings and for manipulating C strings according to the Unicode standard. Libunistring can be used by applications involving non-trivial text processing, such as upper/lower case conversions, line breaking, operations on words, or more advanced analysis of text. Text provided by the user can, in general, contain characters of all kinds of scripts. The text processing functions provided by this library handle all scripts and all languages. It also may be useful for an application that already uses the ISO C / POSIX <ctype.h>, <wctype.h> functions and the text it operates on is provided by the user and can be in any language. The library is also useful for applications using Unicode strings as internal in-memory representation.

Libusb: libusb is a library for use by user level applications to access USB devices regardless of OS. libusb is abstracted internally in such a way that it can hopefully be ported to other operating systems.

Libvisca: Libvisca provides an API for VISCA compliant cameras. VISCA is a protocol developed by Sony for their CCTV cameras, certain webcams and video-conference cameras. This protocol works over an RS232 link. Libvisca API allows you to control most parameters, such as exposure, zoom, focus, iris, and white balance. Libviscaalso supports multiple daisy chained cameras on a single RS232 port.

Libwebp: Provides libwebp.so, a library for encoding and decoding WebP image files. It also contains the command line tools 'cwebp' and 'dwebp'. libwebp is Google's official encoder for WebP images. It can encode in either lossy or lossless mode. Lossy images are essentially a wrapper around a VP8 frame. Lossless images are a separate codec developed by Google. Currently, libwebp only supports YUV420 for lossy and RGB for lossless due to limitations of the format and libwebp. Alpha is supported for either mode. Because of API limitations, if RGB is passed in when encoding lossy or YUV is passed in for encoding lossless, the pixel format will automatically be converted using functions from libwebp. This is not ideal and is done only for convenience.

Libxcpc: The libxcpc library implements automatic resource cleanup and exception handling in C. It offers the notion of Resource Containers organized in a hierarchical way, with automatic cleanup, embedded in C++ like exception handling.

Libxklavier: 'libxklavier' is a library providing high-level API for X Keyboard Extension known as XKB. It is meant to support XFree86 and other commercial X servers. It is useful for creating XKB-related software (layout indicators etc).

Libxmi: A standalone C/C++ function lib for rasterizing 2-D vector graphics. The program can draw 2-D vector graphics primitives, including wide polygonal line and circular and elliptical arcs, onto a user-supplied matrix of pixels. Sophisticated line styles, such as multicolored dashing patterns, can be specified. There is also support for filling and texturing polygons. The program is based on the vector graphics code found in most X windows system servers, but despite its origins, libxmi is completely decoupled from X11. It draws vector graphics onto a user-supplied matrix of pixels, not onto an on-screen window, and uses its own two-stage graphics pipeline.

Libxml++: This package provides a C++ wrapper for the XML parser library libxml2.

Libxml2: Libxml2 is the XML C parser and toolkit developed for the Gnome project, but it can be used outside of GNOME. It provides functions which allow reading data from XML files as well as changing data within the XML tree structure and saving the changing to be used later. Though the library is written in C a variety of language bindings make it available in other environments. This package (a.k.a. libxml or gnome-xml) implements a number of existing standards related to markup languages, including the XML standard, Namespaces in XML, XML Base, RFC 2396, XPath, XPointer, HTML4, XInclude, SGML Catalogs, and XML Catalogs. In most cases, libxml tries to implement the specifications in a relatively strict way. To some extent, it provides support for the following specifications, but doesn't claim to implement them: DOM, FTP client, HTTP client, SAX, and DocBook SGML. Support for W3C XML Schemas is in progress.

Libytnef: The library necessary for the running of ytnef, aka, Yerase's TNEF Stream Reader.

Libzip: 'libzip' is a library for reading, creating, and modifying zip archives. Users can add files from data buffers, files, or compressed data copied directly from other zip archives, and can revert changes made without closing the archive.

Lightning: GNU lightning is a library that generates assembly language code at run-time, it is very fast, making it ideal for Just-In-Time compilers, and it abstracts over the target CPU, as it exposes to the clients a standardized RISC instruction set inspired by the MIPS and SPARC chips.

Link Grammar: The Link Grammar Parser is a syntactic parser of English, based on link grammar, an original theory of English syntax. The system assigns to a sentence a syntactic structure, which consists of a set of labeled links connecting pairs of words. The parser also produces a "constituent" representation of a sentence (showing noun phrases, verb phrases, etc.). The parser has a dictionary of about 60000 word forms. It covers a range of syntactic constructions, including many rare and idiomatic ones. The parser skips over the portions of the sentence that it cannot understand, and assigns some structure to the rest of the sentence. It can handle unknown vocabulary, and makes intelligent guesses from context and spelling about the syntactic categories of unknown words. It understands capitalization, numerical expressions, and various punctuation symbols.

LinkGrammar-WN: LinkGrammar-WN is a lexicon expansion for the Link Grammar Parser. The Link Grammar Parser is a syntactic parser of the English language that is capable of handling a wide variety of syntactic constructions and is considered quite robust. The LinkGrammar-WN project aims to import lexical information from WordNet in an effort to increase the size of the LGP lexicon. This project is of interest to anyone interested in NLP (natural language parsing) of English text.

Lionet: This is a candidate for deletion: 1. No files sources found. A Django application for serving pickle-built Sphinx docs.

Litetrash: 'litetrash' is a shared library which, when preloaded, implements a trash can. Itworks in the same way as libtrash (by intercepting function calls which might lead to accidental data loss), however it has virtually no configuration options and will hopefully compile on any *NIX system.

Lm sensors: This is a candidate for deletion: Links broken. No archive.org entry. Email to maintainer broken. Poppy-one (talk) 15:51, 23 August 2018 (EDT) Available still at https://packages.debian.org/search?keywords=lm-sensors&searchon=names&suite=all&section=all lm_sensors provides essential drivers for monitoring the temperatures, voltages, and fans of systems with the Linux kernel, containing devices such as the LM78 and LM75. It contains drivers for sensor chips and I2C and SMBus masters. It also contains text-based tools for sensor reporting, and a library for sensors access called 'libsensors'. It also contains tools for sensor hardware identification and I2C bus probing. There is a list of supported drivers on the Web site.

Lobbyists: This package provides a reference parser and database importer for the United States Senate LD-1/LD-2 lobbying disclosure database. The Senate provides the database as a series of XML documents, downloadable here: http://www.senate.gov/legislative/Public_Disclosure/database_download.htm The SQL database schema used by the importer is a direct translation of the XML schema used in the Senate documents. This isn't a particularly useful format for analyzing lobbying data, but it is useful for analyzing the lobbying records themselves, which often contain errors or anomalies. In any case, it shouldn't be too difficult to adapt the importing code in this package to a more useful schema.

Lodepng: No dependency or linkage to zlib or libpng required.

Log4c: 'Log for C' is a library for flexible logging to files, syslog, and other destinations. It is modeled after the Log for Java library, staying as close to its API as is reasonable.

Loopess: All links broken. Redirected homepage to archive.org. Poppy-one (talk) 17:16, 29 August 2018 (EDT) Loopess is a small signal and select loop library for applications running on POSIX operating systems. It provides a convenient abstraction of signals, file descriptor events, and timeouts for single-threaded applications using a simple C++ class structure. Loopess properly handles the race condition introduced by mixing signals with the select system call. It uses sigsetjmp and siglongjmp to jump out of signals that occur just prior to entering the select call. Otherwise, these signals would not be processed until the next file descriptor event. Jumping out of these signals safely prevents entering into the blocking select system call. As of Feb 29, 2004, development on this project has been discontinued as per the maintainer.

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