[[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.

Free Software Foundation!

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