The GNU Prolog native compiler
GNU Prolog is a free implementation (under GPL) of the logic programming language PROLOG. It can compile to native machine code which is extremely fast in execution. Another feature is the included constraint solver.
A plugin for Code::Blocks IDE to support CxProlog.
PVN evaluates logical formula in a user defined n-valued semantics. Current efforts are aimed at fleshing out the port to GNU\'s prolog environment. Possible uses include embedding into a public domain knowledge base for a defeasible reasoning system.
Hosting home-made software which is mathematically proven to be correct. We make use of tools like HOL, PVS, ...