The Small Device C Compiler (SDCC), targeting 8-bit architectures
Open Watcom C/C++ compilers and tools Fork
multi-platform cross assembler for 6502/6510/65816 cpu
Implementations for the Revised Report language
A simple armv7h sdk
ATasm is a 6502 command-line cross-assembler.
Homebrew toolchains for wii, gamecube, 3ds, ds, gba, gp32 and psp
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
Embed C++ in Python source code, dynamically compile and access data