travtrack is a tool to help a Traveller(tm) referee keep track of essential data for a game. Already implemented are galaxies, sectors, subsectors, systems, stars, planets, belt and moons. Yet to be implemented are trade routes, ships, characters, and all the rest. These will take some time, but should not be too complex. It currently uses the GURPS Traveller:First In rules for system generation, but a subproject is under way to add Classic Traveller generation and output. travlib is a collection of C routines that should make writing a Traveller application easier. A guile interface to the data representation functions is provided.
u6edit is a world editor for Ultima 6. With u6edit, you can create, modify, and delete objects; manipulate containers, via a tree view; edit terrain in place; view all map and object tiles; view tile and palette animation; view book contents; save map and object data; and play your new worlds with Ultima 6. It is a GTK application written in Perl.
webDiplomacy (previously phpDiplomacy) is a Web implementation of a popular turn based strategy game in which you battle to control Europe. It is not a game of luck: to win you must be diplomatic and strategic, forming and breaking allegiances and bargains with your friends and enemies. It features an interface intuitive and simple enough that seasoned Diplomacy pros and complete newcomers can play alongside each other.
xBaK is a fan-made remake of the classic Sierra computer RPG "Betrayal at Krondor". It is a game engine that uses the data files that came with the original game by Sierra Online. You must already have your own copy, since the required data files are not distributed with xBaK. The game is still under development. The intro, the option dialogs, and the main game dialog are finished, but the game is not yet playable. Several tools for examining the contents of the data files are also available.