JunFa is a chinese chess engine compliant with the CXBoard v1 communication protocol. It is the first OSS bitboard-based Chinese Chess engine released to the public. Its methods of move generation and board representation make it fast and capable of evaluating multiple board states very quickly.
Sen:Te Goban is a powerful, simple, fast Go board for Mac OS X. You can use it to play the game of Go against a program, play with people on Internet Go servers or your local network, or observe live professional and amateur games on IGS. You can review and analyze games, and also browse joseki or fuseki libraries.
Slibo aims to be a comfortable replacement for the xboard chess interface, written for OpenGL and KDE. It uses the xboard protocol and can be used with common chess engines like crafty or gnuchess, but it provides its own chess engine too. Though its designed to be easy to use for the new chess player, it supports playing multiple games the same time, or anaylzing PGN files with multiple engines.
Quantum Star SE is a browser-based space strategy and trading game played across a mapped galaxy against other players. Utilizing mining, trading, research, and production through easy-to-use tools, QS enables both broad micro-management of resources or more "aggregated" methods. Players compete, combat enemy fleets, and manage planets to become the "last man standing". No user downloads are required, and the game is free to host or play.
CHEOPS (CHEss OPponent Simulator) is a fully-functional AI chess program capable of human vs. human, human vs. computer, and computer vs. computer play. It uses a 64-square linear array board representation. The game tree search is alpha-beta, and the static evaluation function considers material, mobility, and motif features. CHEOPS comes with extensive documentation on the program internals, aimed at students or programmers wishing to understand or extend the system.
Marauroa is a multiplayer online game framework server. It uses a multithreaded server architecture with a TCP oriented network protocol, a MySQL based persistence engine, and a flexible game system. The game system is totally expandable and modifiable by game developers and is able to run Python scripts defining the game's rules. Marauroa is based on a design philosophy called Action/Perception. Marauroa is totally game agnostic and makes very little assumptions about what are you trying to do, allowing a great freedom to create any game type.