An award-winning drawing program for children ages 3 to 12
Tux Paint is a free, award-winning drawing program for children ages 3 to 12. It combines an easy-to-use interface, fun sound effects, and an encouraging cartoon mascot who guides children as they use the program. Kids are presented with a blank canvas and a variety of drawing tools to help them be creative. Along with paintbrush, shapes and text, Tux Paint includes a "stamp" feature to add pre-drawn or photographic imagery to pictures, and a set of "magic tools" that provide filter effects (like blur, tint and waves) and interesting drawing tools (like train tracks, bubbles and grass). Tux Paint includes a collection of "starter" images, both coloring-book style and photo-realistic, and a large collections of stamps are available as a separate download. Additional content can be added by parents and teachers, or downloaded from 3rd parties. Tux Paint is available for Linux, BSD, Windows, Mac OS X and Haiku operating systems.
FlightGear Flight Simulator: free open-source multiplatform flight sim
Founded in 1997, FlightGear is developed by a worldwide group of volunteers, brought together by a shared ambition to create the most realistic flight simulator possible that is free to use, modify and distribute. FlightGear is used all over the world by desktop flight simulator enthusiasts, for research in universities and for interactive exhibits in museums. FlightGear features more than 400 aircraft, a worldwide scenery database, a multi-player environment, detailed sky modelling, a flexible and open aircraft modelling system, varied networking options, multiple display support, a powerful scripting language and an open architecture. Best of all, being open-source, the simulator is owned by the community and everyone is encouraged to contribute.
A planetarium software that shows a 3D simulation of the night sky
Stellarium renders 3D photo-realistic skies in real time with OpenGL. It displays stars, constellations, planets, nebulae and others things like ground, landscape, atmosphere, etc.
Open source voxel world
Terasology is a free and open-source survival and discovery game set in a voxel world. Influenced by Minecraft, Dwarf Fortress and Dungeon Keeper, it offers a unique and enjoyable building and playing experience. Terasology requires Java 8 and an updated graphics card driver.
An emulator for Gameboy and GameboyAdvance systems
An emulator for Gameboy and GameboyAdvance systems.
A free transportation simulator game
Simutrans is a cross-platform simulation game where players try to successfully manage transportation systems between places by land, air, and water for passengers, mail, and goods. Planes, ships, trains, trams, trucks, buses, or monorails are at your disposal, but factories operate based on contracts and passengers can only travel to their set destinations.
RTS game with the theme of Strategy by Design
You command the forces of “The Project” in a battle to rebuild the world after mankind has almost been destroyed by nuclear missiles. The game offers a full campaign with optional (but strongly recommended!), videos, battle against four factions, multi-player and single-player skirmish modes, and an extensive tech tree and a full unit designer. Multi-player is also cross-platform, battle your friends with any OS, Windows, Linux or Mac, it all works seamlessly! We also offer 100% portable Windows builds, take the game and install it anywhere! Our source repo is now at https://github.com/Warzone2100/warzone2100 If you are using linux, and want a .deb, then please get the latest version available from http://www.playdeb.net/app/Warzone2100 (They are not affliated with us, but they do have the latest builds!) Warzone 2100 works on both 32 & 64 bit Windows Vista or higher, 32 or 64 bit Linux, 32 or 64 bit Macs.
An open source NES Emulator for Windows and Unix that features solid emulation accuracy and state of the art tools for power users. win32 autobuilds @ https://ci.appveyor.com/project/zeromus/fceux/build/artifacts
Action RPG that's easy to mod
Flare (Free/Libre Action Roleplaying Engine) is a simple single-player Action RPG engine. Instead of being a general engine that handles many game types, this focused engine is small and easy to mod. Included is a demo game featuring dark atmosphere and fast-paced combat. The code is GPL and the art is CC-BY-SA.
DivFix++ is yours AVI video repair and preview software. It designed for repair and preview files which are on download from ed2k(emule), torrent, gnutella, ftp. web or any other source on the internet. It can repair AVI and DivX files (for now.)
3D game engine (more powerful redesign of the Cube engine) and FPS game
Chess Database and Toolkit program
"Shane's Chess Information Database" is a huge chess toolkit with extensive database, analysis and chess-playing features. Scid vs. PC is a usability and bug-fix fork of Scid. It has extensive interface fixes and improvements, and is fully compatible with Scid's .si4 databases. It's new features include a rewitten Gamelist, a Computer Tournament, and FICS, Tree and Book improvements.
Scid is a chess database application (cross-platform, for Unix/Linux and Windows) with many search and database maintenance features.
3D space trading and combat game
Oolite is a free and open source space trading and combat simulation game where you are the pilot of a spacecraft capable of interstellar travel. Inspired by the classic 8-bit game Elite, it features many similar aspects of gameplay. You can travel to different planetary systems, encounter challenges and embark on missions in a quest for wealth and glory. Oolite runs on Mac OS X (10.6 or later), Windows (XP or later), and Linux, and does not require the latest hardware except for certain expansion packs. Powered by Objective-C and OpenGL, it is designed as a small game that users can easily pick up, modify and expand.
Real-time 3D visualization of space
Celestia is an application for real-time 3D visualization of space, with a detailed model of the solar system, over 100,000 stars, more than 10,000 galaxies, and an extension mechanism for adding more objects.
K-3D is the free (as in freedom) 3d modeling, animation, and rendering system.
4X Space Strategy Game
FreeOrion is a free and open source community-developed 4X turn-based galactic empire strategy game.
OpenTTD is an open source clone of the Microprose game "Transport Tycoon Deluxe". For more recent versions visit our website: http://www.openttd.org
XMLTV obtains and processes TV listings data
XMLTV is a set of programs to process TV (tvguide) listings and help manage your TV viewing, storing listings in an XML-based format. There are utilities to download TV listings for many countries, filter programs and Perl libraries to process listings. Our code is now available on Github at https://github.com/XMLTV/xmltv and new issues should be reported at https://github.com/XMLTV/xmltv/issues
Domination is a game that is a bit like the well known board game of Risk or RisiKo. It has many game options and includes many maps. Written in java it includes a map editor, a simple map format, multiplayer network play, single player, hotseat, 5 user interfaces and many more features, it works in all OSs that run java 1.4 or higher, and Android.
QuakeSpasm is a *Nix friendly Quake Engine based on the SDL port of the popular FitzQuake. It includes some new features, important fixes, and aims for portability and 64 bit correctness.
OpenKore is an automation tool for Ragnarok Online
OpenKore is an automation tool for Ragnarok Online-compatible games, authorized to be used on KoreRO. **MOVING TO GITHUB** As of February 28th 2016, the OpenKore project has moved to GitHub. Please see the OpenKore wiki for more information: http://openkore.com/index.php/Git This SourceForge page will remain online for now, but the project has been locked in "read-only" mode and no more updates will be published here. **DOWNLOADING KORE FROM THIS PAGE WILL GIVE YOU AN OLD VERSION**
Provides a full suite of clients and servers for virtual worlds.
Worldforge provides clients, servers, tools and protocol to allow for anyone to create and host their own virtual and online world.
3D Engine c++
The Irrlicht Engine is an open source high performance realtime 3D engine written and usable in C++. It is completely cross-platform, using D3D, OpenGL and its own software renderers.
For exploring cellular automata like the Game of Life.
A cross-platform application for exploring Conway's Game of Life and many other types of cellular automata. Features include bounded and unbounded universes, fast generating algorithms, Lua/Python scripting, and a state-of-the-art pattern collection.