Arianne is an engine to develop multiplayer online games like Stendhal
A framework to build Pokémon RPG games
Helpful tools to extend the NWN Toolset
General Purpose Engine for Graphic Adventures.
Convert fixed-format RPG code to free-form RPGILE code
iRPGUnit Testing for RPG Developers on IBM i
RDi/WDSCi plugins for JCRCMDS.com
RPG Templates and 'standard' base functions
A complete web framework to create online Fighting Fantasy adventures
A minimalist and cross platform System Shock source port
Development of a plugin based dev tool for RPG Maker
Lightweight framework for old-school RPG GUI in web!
GS3 project
Performance enhancement API for RPG Maker XP, VX, VXA.
Arengu is a free 2D RPG with a thrilling story and exciting gameplay.