Tool support for the Z formal notation
object orientated scripting language
eXist-db is a feature rich Open Source native XML database
A free, cross-platform emulator for GW-BASIC, PCjr & Tandy BASIC
A new, fast and powerful system shell! Written in pure C!
Expression evaluator for Delphi developers
Computer calculations made easy
An object oriented language for concurrent software development
a python interpreter written in php
Java Internet Prolog (Moved to GitHub)
Math Parser for Java