AbiWord
Text Editors
AbiWord is a free word processing program similar to Microsoft Word. It is suitable for a wide variety of word processing tasks.
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AbiWord is a free word processing program similar to Microsoft Word. It is suitable for a wide variety of word processing tasks.
download | screenshots
Adium is a free instant messaging application for Mac OS X, released under the GNU GPL. With Adium, you can connect to any number of messaging accounts on any combination of supported messaging services and then chat with other people using those services.
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AfterStep is a window manager for the Unix X Window System. Originally based on the look and feel of the NeXTStep interface, it provides end users with a consistent, clean, and elegant desktop. The goal of AfterStep development is to provide for flexibility of desktop configuration, improving aestetics, and efficient use of system resources.

aMSN is a free open source MSN Messenger clone, with features such as, Offline Messaging, Voice Clips, Display pictures, Custom emoticons, Multi-language support, Webcam support, Full-speed File transfers, Group support, Tabbed chat windows, plus many more.
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Armagetron is a multiplayer game in 3d that attempts to emulate and expand on the lightcycle sequence from the movie Tron. It’s an old school arcade game slung into the 21st century.
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BZFlag is a multiplayer 3D tank battle for Irix, Linux, Solaris, or Windows.
Audacity is free, open source software for recording and editing sounds. It is available for Mac OS X, Microsoft Windows, GNU/Linux, and other operating systems.
Azureus is a BitTorrent client written in Java. The BitTorrent protocol is a new way of exchanging or distributing data over the internet.
Bean is a small, easy-to-use word processor (or more precisely, a rich text editor), designed to make writing convenient, efficient and comfortable.
Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.