Open-source, free, multi-platform BASIC compiler, with syntax similar MS-QuickBASIC (including the GFX statements), that adds new features such as pointers, unsigned data types, inline assembly, a pre-processor and many others.
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.
CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
Homebrew toolchains for wii, gamecube, 3ds, ds, gba, gp32 and psp
This project is for homebrew console development tools based on the gnu compiler collection with additional tools and libraries to aid programming each supported console. The windows variants are built with MinGW.
The NT POSIX C Runtime Library is an IEEE standard runtime library for the NT POSIX subsystem. It can be used as a complete replacement or a side by side alternative for what is shipped with the Interix SDK.
An open source COBOL compiler for the PC x86-32 platform.
Generates GNU assembler and requires GCC to produce a binary.
Supports Linux, BSD and MinGW 32 bit platforms.
A collection of development tools and build environments for Interix using the Microsoft compiler. Aims to facilitate interaction between Visual Studio, Microsoft build and GNU tools. Ex Visual Studio Addins, shell scripts, makefiles and library patches.
A microkernel operating system distribution offering (among other things) very low hardware requirements, full and easy portability and easy-readable source code.