A free C, C++ and Fortran IDE
Free 32/64/16-bit multi-platform Pascal and Object Pascal compiler
A whole-program optimizing compiler for Standard ML
The GNU Prolog native compiler
A friendly Forth compiler with a little difference
Oberon V4 for Linux and sources for different Oberon V4 implementation
A software components library
Translates state machine into a target programming language.
RetDec is a retargetable machine-code decompiler based on LLVM
A BASIC interpreter and compiler with graphics.
Open Source C & C++ IDE for Windows
ANSI Standard MUMPS
An object-oriented script language to embed in any application
Moved to https://github.com/davidgiven/ack
Open Utlity is series of unix utlity just like gnu for linux / windows