GemUO is a framework for Ultima Online, which enables you to write macros in the Ruby language.
NetHack-de is a translation of NetHack into German.
Norz³ (NorzCubed) is a OpenSource RPG wich tries to achieve the playability of games like DII or Sacred. It's intended to provide onlineplaying as well as singleplayer and a high modularity to get a highly dynamic environment wich is changeable by anyo
Pertergrin a fantasy role playing game. The player plays the role of a hero going through adventures. Pertergrin is also an role playing game system. This enables you to create or improve a world, towns, items etc. using an Editor.
Curupira is a powerful, full-featured, cross-platform, pretty-well-tested, well-documented and easy-to-use open source server application (shard emulator) for ultima online.