[[Interface::x-window-system]]

Abcsh: abcsh, still in the planning stages, will be a shell for processing ABC music notation files. It could form the foundation of a larger system for music composition and orchestration using ABC music notation as a means of representing musical performance. The shell hopes to handle routine ABC transformation like part extraction, transposition, part merging etc. It will also be designed so that you can access the ABC notation file content from embedded scripting languages. It supports ABC music notation version 2.0.

AbiWord

AbiWord is a full featured word processor. Current features include:

basic character formatting
paragraph alignment
spell-check
import of Word97 and RTF documents
export to RTF, Text. HTML, and LaTeX formats
interactive ruler and tabs
styles
unlimited undo/redo
multiple column control
widow/orphan control
find/replace
images

Abuse: Abuse is a 2D side-scrolling shoot-'em-up action/puzzle game.

Academic Teaching Planner: Academic Teaching Planner is a free software useful to plan university courses and various types of tests. It is designed as a personal tool beside management software used by academic institutions, and allows to: 1. manage and archive the documentation of each single course (objectives, bibliography, dates, information texts, lessons, files of all kinds, etc.) as well as the results of the tests, even the intermediate ones that are not always stored in management systems used by academic institutions; 2. manage the list of students who are enrolled in each individual course, easily retrieving their data from the management system in use at the academic institution, and their tests; 3. compare the distribution of bibliographic resources in the various lessons, made by the professor, with a reference model obtained by their homogeneous distribution throughout the course, to verify, also with the aid of diagrams, that the supposed planning is substantially realistic, that is, can be completed on schedule without omitting topics or lessons in excess. Academic Teaching Planner is a cross-platform software that runs natively on GNU/Linux, Windows and macOS. It manages data with Sqlite, a well-known and reliable database, while saving attachments (i.e. files of any kind associated with the various sections of the software) in an external folder, in a transparent way for the user. Their number and size are limited only by the space available on the computer in use. Academic Teaching Planner has been written with Lazarus (www.lazarus-ide.org) and uses the Sqlite database through the Zeos components (sourceforge.net/projects/zeoslib).

Accerciser: Accerciser is an interactive Python accessibility explorer for the GNOME desktop. It uses AT-SPI to inspect and control widgets, allowing you to check if an application is providing correct information to assistive technologies and automated test frameworks. Accerciser has a simple plugin framework which you can use to create custom views of accessibility information.

Acm: GNU ACM is a distributed aerial combat simulator that runs on the X Windows System. Players engage in air to air combat against one another using heat seeking missiles and cannons. The program has support for 16, 24, and 32 bit graphics cards.

Acme: ACME is a small GNOME tool to make use of the multimedia buttons present on most laptops and Internet keyboards: Volume, Brightness, Power, Eject, My Home, Search, E-Mail, Sleep, Screensaver, Finance, WWW, Calculator, Record, Close Window, Shade Window, Play, Stop, Pause, Previous, Next, Groups, Media, Refresh, and Help buttons. It works on all the platforms GNOME supports (laptops and PCs). It uses either OSS or ALSA for Volume control.

Actim: Actim allows you to send and retrieve files, and to call command line programs on a target machine via emails. The application can handle both synchronous and asynchronous requests with basic security features. It has both command line and graphical user interfaces. This can be useful if, for example, your home PC does not have any access to your office workstation which is behind the company firewall.

Adie: Adie is a fast and convenient programming text editor written using the FOX Toolkit. It is also a convenient file viewer, supporting several methods to move from one file to the next. For each visited file, it remembers where you were last looking, and which special places have been bookmarked, so you can quickly return to frequently visited places. Users can optionally visit files with a single click by displaying the File/Directory browser side by side with the text.

Advance: Advance is a free software personal information management (PIM) system which is database-backed, Qt based, cross-platform, and includes support for KDE. Advance provides provides schedule, task and contact management.

Aegis: Aegis is a transaction-based software management system. It provides a framework within which developers work on changes independently, and coordinates integrating those changes back into the master source code. The program supports geographically distributed development. Aegis supports distributed and multiple repositories, change sets, multiple lines of development, multiple simultaneous active branches, and branching to any depth. It enforces a development process which requires that change sets "work" (they must build successfuly and optionally include and pass tests) before being integrated into the project baseline. It also ensures that code reviews have been performed. The program also supports long transactions, which allows appropriately created changes to be treated as if they were projects and therefore to have changes made to them. This allows a hierarchy of changes within changes, to any depth. Each project is a separate repository, with separately configurable policies.

Aetherspace: Aetherspace is a project to produce a multiplayer game that blends several different game genres. It is being developed by gamers as a way to learn programming. These games are currently under development and, while fun to look at, are not considered playable yet.

Aewm: Aewm is a minimalist window manager for X11. It has no nifty features, but is light on resources and extremely simple in appearance. It should eventually make a good reference implementation of the ICCCM. A few separate programs are included to handle running programs, switching between windows, etc.

Affinity

Affinty is a desktop search tool, which hopes to provide a quick way to get at all the different information on your desktop. It achieves this by having various back-ends, but implemented through one standard interface.
Current Features

Front-end to both the Beagl and Tracker desktop search engines.
Has actions (configurable through Desktop files), which speed up common tasks.
Has built-in, user-configurable, filters which work in the the entry box, so typing pics:london will only bring up pictures.
Super-fast application searching through an built-in list of applications.
Colours can be customised to your taste.
Lives in the system-tray, but can be called by a global key stroke. Default is Ctrl+Alt+a, but you can change it to anything you like!

AfterStep: AfterStep is a Window Manager for X which started by emulating the NeXTSTEP look and feel, but which has been significantly altered according to the requests of various users. Many adepts will tell you that NeXTSTEP is not only the most visually pleasant interface, but also one of the most functional and intuitive out there. AfterStep aims to incorporate the advantages of the NeXTSTEP interface, and add additional useful features.

AfterStep Clock Applet: NeXT-like clock, completely rewritten for gtk & gnome. Features the classic NeXT clock, a few themed digital clocks, Internet Beats clocks (Swatch-style), and coolest of them all fully pixmaped analog clocks. It can set the timezone for asclock

Agave - GNOME Colorscheme Generator: GNOME Colorscheme lets you select a starting color and generate six different kinds of color schemes. The colors can then be copied to the clipboard for easy use in HTML and CSS. It is currently a very simple but useful utility.

Agendaroids: A clone of 'Asteroids' using fixed-point math, originally developed for the Agenda VR3 GNU/Linux-based handheld PDA.

Agide

The A-A-P GUI IDE is a framework in which separate tools can work together. Like any other Integrated Development Environment it supports:

Creating a project
Building and executing a program
Browsing files
Debugging a program while displaying source code
Framework Agide is not a monolitic application. Separate tools can be plugged in. Thus you are not forced to use one editor. Each tool implements part of the plugin interface. This interface makes it possible for a tool to communicate with other tools, without the need to know how the other tools work. For example, an editor can set a breakpoint in a file, without knowing what kind of debugger is being used. And the debugger can show the PC position in a source file, without knowing what editor is being used.

AirTraffic: AirTraffic is a game that puts you into an air traffic controller's hotseat. Planes come into your airspace from various directions; you guide them safely to their final destinations. While not yet complete, the program is under active development; it currently consists of various server programs and a GTK/Gnome client. The client uses GTK/Gnome as its UI. The author welcomes contributions from UI designers and coders as well as individuals with air traffic experience.

Airs: Airs is a tool that can periodically check for new TV episodes online on a few of the popular Web sites. It will present to you if and when there are new episodes available. It supports lifetime management for the downloaded episode information where you can track which episodes you've already seen, which you are still retrieving, and which ones you still have to find.

Akfquiz: 'AKFQuiz' lets you make your own quiz games, learning exercises or psychotests. These can be used with grquiz in a graphical environment, or with scrquiz on the text-console. There is also a line oriented variant, linequiz, which can be used as a backend. A CGI-variant, cgiquiz, can be installed on a Web server to offer exercises via Internet or a local network. Or you can use mkquiz, which generates an HTML-file for to use with JavaScript. Those can then be published using any web-space provider.

Akregator: 'akregator' is a fast, lightweight, and intuitive feed reader program for KDE. It lets you browse quickly through hundreds of thousands of internet feeds quickly, efficiently, and in a familiar way. It is currently under an extended beta beta process, but is considered stable.

Alacritty: Launched in 2017, Alacritty is a terminal emulator that uses Rust (a memory-safe language) and OpenGL for rendering everything, aiming for perfomance, security, configurability, and simplicity. A list of Alacritty's features can be found here. Alacritty is currently in beta, but is already used as a daily driver by many people. It is also the default terminal emulator for Sway, a Wayland-native WM. Another Wayland-native, GPU-accelerated terminal emulator is kitty.

Album Cover Art Downloader 2: Album Cover Art Downloader will go through your collection of music albums and for each one download a set of matching cover images for you to choose from. It makes the selected image usable for programs such as KDE, Windows Media Player, etc.

Alerttail: Alerttail monitors a given file and executes a list of actions when a user-defined text pattern has been written to the file. For example, the user can pop up a GTK notification window when a certain message is written to a log file. Actions can be alerttail-built-in actions (GTK notify action, geoipLocalization action, or filtering text action) or a custom user defined shell command action.

Alfandega Firewall: Alfandega Firewall is a collection of Perl modules that helps users to implement iptables-based firewalls for two interfaces. It provides local and remote blacklists, spoofing checks, packet forwarding, ICMP control, service configuration, and more.

Aliens: A shooting game similar to the arcade games "Space Invaders" and "Galaxian," originally created for the Agenda VR3 GNU/Linux-based handheld PDA.

AllCommerce: AllCommerce is an e-commerce/content application based on Perl and SQL92 databases which runs under Unix/GNU+Linux/Win2000 using SQL database engines (MySQL/Postgres/etc). It provides a shopping cart as well as tools for content, merchandise, statistics, vendor, order, and inventory. Its modular design allows it to be used as a complete or partial solution.

AllTray: AllTray is software that allows users to dock any application into the system tray. You can dock (for example) Mozilla Thunderbird, Evolution, and even terminals. A highlight feature is that a click on the close button of an application will minimize it to the system tray. It works well with Gnome, KDE, XFCE 4, Fluxbox, and WindowMaker.

Allegro: Allegro is multi-platform game programming library for C/C++ developers distributed freely, that provides many functions for graphics, sounds, player input (keyboard, mouse and joystick) and timers. It also provides fixed and floating point mathematical functions, 3d functions, file management functions, compressed datafile and a GUI. It can also be used for other types of multimedia programming.

Alleyoop: Alleyoop is a graphical front-end to the increasingly popular Valgrind memory checker for x86 GNU/Linux using the Gtk+ widget set and other GNOME libraries for the X-Windows environment. Features include a right-click context menu to intelligently suppress errors or launch an editor on the source file/jumping to the exact line of the error condition. A searchbar at the top of the viewer can be used to limit the viewable errors to those that match the regex criteria entered. Also included is a fully functional Suppressions editor.

Alliance: Complete set of free CAD tools and portable libraries for VLSI design. It includes a VHDL compiler and simulator, logic synthesis tools, and automatic place and route tools. Advanced verification tools for functional abstraction and static timing analysis are part of the system. A complete set of portable CMOS libraries is provided, including a RAM generator, a ROM generator, and a data-path compiler.

AllocPSA: allocPSA is an online professional services automation solution. allocPSA is a suite of integrated applications designed for services-based organizations. It enables services organizations to improve staff efficiency through increased utilization of productive time, better planning, and integrated knowledge management.

Alsaplayer: AlsaPlayer is a PCM player written with the ALSA sound system in mind. It also includes support for JACK, OSS, NAS, and ESD. It makes extensive use of multi-threading and supports OGG, MP3, WAV, CDDA (CD Digital Audio), MOD, S3M, IT, and many other input types. Features include a real- time effects stream, variable speed/pitch control, multiple active visual scopes, command line mode, playlists, plugin architecture, low-latency mode, and more.

Althea: Althea is an IMAP E-Mail client for Gtk. Supports such advanced features as multiple servers, IMAP over SSL and message filtering.

Amarok: Amarok is a cross-platform multimedia player that uses the Phonon sound server framework to play audio media and streams, and features a fresh and efficient approach to playlist handling. The emphasis is on the quick and easy user interface, allowing for fast access to the media library.

AmigaShell: AmigaShell makes your shell look just like an Amiga commandline. It won't run under X or over a remote shell. It has been tested successfully on i386 (textmode), Sparc (framebuffer), and PowerPC machines running Debian GNU/Linux. There is an information bar across the top that shows kernel version, free memory, load average, time, and date. Amigashell loads the amiga font, changes the cursor appearance, and loads amiga colors but does not affect screen resolution.

Anagramarama: The aim is to find as many words as possible in the time available. Get the longest word and you'll advance to the next level. Three words describe it... Simple Addictive Fun

Anguly Mail Client: A lightweight Mail Client written in C and Gtk+, with Pop3, Imap, GMail, Smtp Support, currently support only Pop3 and SMTP.

Animal Shelter Manager: Animal Shelter Manager is a complete ksoftware solution for animal sanctuaries and rescue shelters. It features complete animal management, document generation, full reporting, charts, Internet Web site publishing, PetFinder integration, and more.

Anjuta: Anjuta is a development IDE. Current features include project management, application wizards, an on-board interactive debugger, and a source editor with source browsing and syntax highlighting.

Anki: Anki is a flashcard program which makes remembering things easy. Because it is a lot more efficient than traditional study methods, you can either greatly decrease your time spent studying, or greatly increase the amount you learn. Anyone who needs to remember things in their daily life can benefit from Anki. Since it is content-agnostic and supports images, audio, videos and scientific markup (via LaTeX), the possibilities are endless. For example: - learning a language - studying for medical and law exams - memorizing people's names and faces - brushing up on geography - mastering long poems - even practicing guitar chords!

AntiDialer: AntiDialer is a QT-based broadband dialer for Sify Broadband users in India. It has features comparable to the Sify Windows dialer, such as password saving and autologin. Now Sify users no longer have to depend upon the old default dialer provided by Sify.

Antiright: 'AntiRight' is optimized to work on all POSIX-compatible systems supporting the Motif API. The software consists of a text editor, a clock, a CD player, a sticky notes applet, an internet dialer interface, a filemanager, a calculator, a shell command launcher, a help system, an X backdrop editor, an X resource theme selector, a security control panel, an xhost controller, a disk settings panel, and a graphical pager.

Apertium: Apertium is a machine translation platform. Data for a language pair can be used to translate text in various formats from one language to another.

AppliWorks: Appliworks is an application that was designed to let you classify and view your pictures in an innovatie way, without even touching the real file on your hard drive. It implements a virtual folders-based pictures database with multi-view windows similar to those in iPhoto. Many operations can be perfomed using drag-and-drop.

Aqsis: Aqsis is a Renderman(tm) compliant 3D rendering toolkit. It is based on the Reyes rendering approach. Features include programmable shading, true displacements, NURBS, CSG, Motion Blur, and direct rendering of subdivision surfaces.

Aqualung: Aqualung is an advanced music player originally targeted at the GNU/Linux operating system, today also running on FreeBSD, OpenBSD and other platforms. It plays audio CDs, internet radio streams and podcasts as well as soundfiles in just about any audio format and has the feature of inserting no gaps between adjacent tracks. It also supports high quality sample rate conversion between the file and the output device, when necessary.

Ara: 'Ara' is a command-line utility for querying the Debian package database. It has a query syntax allowing you to search for boolean combinations of regular expressions. It includes a simple syntax and line-editing. A graphical interface, xara, is also provided.

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