A complete runtime environment for gcc
The Small Device C Compiler (SDCC), targeting 8-bit architectures
Scripts, Makefiles, tools helping to build TinyCC on Windows and wine.
A minimalistic but complete standard Forth compiler in C
C compiler and dev kit for the z80 with assembly language libraries.
BASIC Compiler and Interpreter
EMX compiler hosted on Win32
Implementations for the Revised Report language
Mariko's GCC for the x68000
Ada cross compiler and libraries for AVR µCs
A "Just Enough Language" compiler targeting the 6502/Z80/6809
Homebrew toolchains for wii, gamecube, 3ds, ds, gba, gp32 and psp
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
Moved to https://github.com/davidgiven/ack
C/C++ Compiler for the ActionScript Virtual Machine (AVM2)
ARM linux run shared library rundotso dlopen dlsym Inline Assembler