Links

Site Description
Alchemy Alchemy is an open drawing project aimed at exploring how we can sketch, draw, and create on computers in new ways. Alchemy isn’t software for creating finished artwork, but rather a sketching environment that focuses on the absolute initial stage...
Battle for Wesnoth Wesnoth.org is the home of one of the shining stars of the free/open source gaming community, Battle for Wesnoth. In addition to the game itself, this site also hosts an active general open source game development forum.
Blender Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.
BlenderNation A news site and forum dedicated to the open source 3D content creation suite, Blender.
DeviantArt Probably the biggest art community on the web.
Ethanon Ethanon Engine is a free 2D game development tool focused on the recent video cards for hardware acceleration and shader effects.
FreeGameDev An Open Source game development site
freesf2.com A set of orchestral soundfonts assembled by the Wesnoth music team.
gamespacelib GameSpaceLib is an open source and very easy to use multimedia library specially designed for game, engine or framework programming in C++. It offers powerful 2D graphics features, audio functionalities, input devices control, video streaming...
Gluon The Gluon project is an open framework for creating and distributing games - supporting the flow of the idea all the way from the author to the player of the finished game. The primary use of Gluon is to create games using 2D graphics. The reasoning...
Inkscape An excellent, easy-to-use open source vector drawing package.
Krita Krita is different from other graphics design programs in that it has it has pluggable brush engines, some supporting brush resources like Gimp brush files, and other offering sophisticated simulation of real brushes, and others again offering...
Les Forges Les Forges is a pixel art website in French. Even if you don't speak the language, I highly recommend firing up Google Translate and reading some of their art tutorials, which are absolutely stellar.
Libre Game Wiki An extensive and frequently updated wiki about Free and Open Source games.
LOVE A 2D game engine in Lua, for both open source and proprietary games.
MyPaint A promising application under development, targeted towards digital painting.
OpenArena An Open Source first person shooter based on the Quake 3 engine.
OverClocked Remix A video game music remixing site. While not directly related to open source, it has an excellent forum for composers.
Pixel Joint A pixel art community.
Pixelation From their faq: "Pixelation is a message board about pixel art, first and foremost. Its role is to provide a setting in which people may sharpen their skills by posting work and receiving critique from others, and to offer critique when others...
The GIMP An open source image manipulation package for Windows and Linux.
The Independent Gaming Source Independent Gaming News
The Linux Game Tome The biggest and best portal for all games that run on Linux.
The-Blueprints.com Free blueprints for various cars, planes, military vehicles, etc.
Toolkit Zone The official home of RPG Toolkit, an Open Source RPG maker.
WikiWorlds A site similar to this one that archives 3D models, maps, and audio.