Runesword II (RSII) is a CRPG designed to appeal to the "pen & paper" role-player. RSII features turn-based, strategic combat, 50+ skills, races, and several full-length adventures & worlds. Plus a completely flexible game construction set/world maker
PTISC (Project Turn-base Isomatric SLG Core)is a turn base Isomatric SLG game play engine.
Using DelphiX for content display.
Related topic is SRC(Simulation RPG Construction) built by Kei Sakamoto.
Generic Roster Generator. GRoG automates the process, often complex and error prone, that every boardgames and wargames player knows very well: the construction of rosters.
Galahad is a Java framework for the construction of multi-player card and board games of all types. Galahad will include network and AI play and will ultimately evolve into a set of vertical and horizontal frameworks.