The GNU Prolog native compiler
Open Watcom C/C++ compilers and tools Fork
C compiler and dev kit for the z80 with assembly language libraries.
ImpLib SDK produces custom Import libraries for Windows DLL
an object-oriented language with late binding
Simple ⇒ Object-Oriented ⇒ Functional
Prolog to C compiler with runtime for DOS, Windows and Raspbian
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)
High-level, meta-language, trans-compiler with virutal machine
Open Utlity is series of unix utlity just like gnu for linux / windows
COBOL compiler for the PC x86-32 platform.