JinnIde is a plugin that allows using Jinni Prolog, now also hosted here on this site (with open source license!), within the confines of an IDE integrated in JEdit.
OpenPoplog is a multi-language, incrementally-compiled virtual machine-based development environment with its own extensive teaching and support material, supporting the languages Pop-11, Prolog, Common Lisp and ML on Unix, VMS, Linux and Windows.
HiTacWar
Hierachical Tactical Warfare
Game Engine which depends on freecnc.
Main Points are KI Based Commando Structures, Electronic Warfare, Research and Shadow Structs and Shadow Armies.
The SLIE agent modelling software allows researchers in MAS (Multi-Agent Systems) to build simulations of MASes with a view to exploring design problems relating to scalability and robustness using techniques from ecology, biology and economics.
The Prolog Expert System Shell (PESS) is a software that generates ES using basically two components: Knowledge Base, used by the ES to guide its decisions making, and Inference Machine, cable of collection the rules and generating new facts.