ECLiPSe Constraint Logic Programming System
A whole-program optimizing compiler for Standard ML
Oberon family of languages to C translator for ARM, x64 and x86 archit
Transcribe Parsing Expression Grammar into a parser written in Java.
A fast, portable, simple, and free C/C++ IDE
"Perlito" Perl programming language compiler
Homebrew toolchains for wii, gamecube, 3ds, ds, gba, gp32 and psp
Full-blown Standard ML Compiler