The Small Device C Compiler (SDCC), targeting 8-bit architectures
Binary executable decompiler
Open Watcom C/C++ compilers and tools Fork
MinGW GCC cross development environment for ARM.
multi-platform cross assembler for 6502/6510/65816 cpu
Create\Open Android update-script, Fast and Easily.
C compiler and dev kit for the z80 with assembly language libraries.
Implementations for the Revised Report language
MinGW GCC cross development environment for Power PC.
MinGW GCC cross development environment for M68K.
Cross compiling environment to DJGPP v1
EMX compiler hosted on Win32
Scripts, Makefiles, tools helping to build TinyCC on Windows and wine.
Oberon family of languages to C translator for ARM, x64 and x86 archit
Mariko's GCC for the x68000
A minimalistic but complete standard Forth compiler in C
ATasm is a 6502 command-line cross-assembler.
Cross compiling environment to DJGPP v2
Ada cross compiler and libraries for AVR µCs
An open source ecosystem for IoT development