GemRB is a portable open-source implementation of the Infinity Engine
The ECE is for creation and managing ED3+ED4 characters.
Ur-Quan Masters High Definition
The Clue! / Der Clou!
Provides a full suite of clients and servers for virtual worlds.
3D urban environment renderer : browser-app ; as well as a GTA clone
Mini games with Meks
Old School gaming tool for GMs of AD&D/OSRIC.
Simple GUI to create a CYOA Build-logfile.
A tracking program used to track important characteristics in RPG's
Dice Roller