Simple Workflow is a free workflow engine written in Java.
Simple crossplatform IDE for people who study programming
State machines for Java, FSM.
Excel/VBA Integration of Picat programming language
scientific programming language and graphics
An IDE for lpsolve made in C language
Graph algorithms interpreter, IDE, debugger, 3D visualizations.
Open Source SEO & SEM Text Creation Tools for free Article Writer
MicroLua brings Lua on the Nintendo DS for easy programming
A wxMax based IDE for the programming language BlitzMax
Magda language resource site
PHP Support for GNU Emacs
A multi-language port of Browserscope's user agent parser
DXF to Kicad Module File Converter
COIL:A Programming Language made by Teens for Teens(ikr)
An HDL alternative to PCB graphical schematic capture tools.
Open Source Penetration Testing / Ethical Hacking Framework
a dbms for neural nets. Chatbots, DTrees, random forests, n-grams,...