VHDL 2008/93/87 simulator
Compile your Julia Package
NumPy aware dynamic Python compiler using LLVM
The EPICS SNL Compiler and Sequencer
Vectorized libm
(X)BNF simple and clever translation grammar compiler
Scimark for Delphi/Lazarus/Free Pascal
Growth-grammar related Interactive Modelling Platform
small console GML or graphviz DOT graph viewer
OpenM++: open source microsimulation platform
Python in the Browser
Natural Language Compiler
Electronic design and programming tools suite like Eagle, MpLab
An HDL alternative to PCB graphical schematic capture tools.