AO Needs is an Open Source FREE 2D MMORPG, from the Argentum Online code, it has: guilds, magic, combat, animal taming, 21 skills, a huge world with towns and dungeons. Several races and professions. Client and server are distributed under Affero GPL v1.
GSZ Argentum Online is an Argentum Online Mod, it includes all Argentum Online features and more!
The engine for the upcoming Open Terror. This engine is based mostly on the XreaL project, with parts taken from AltUrt and ioQuake3 too. Still under development, but will soon be one of the first modern semi-realistic open source FPS games.
Run Windows applications on any computer.
WineBOX is an Open Source implementation of the Windows API and a program loader, allowing many unmodified Windows binaries to run on x86-based computers with out need a operative system.