A free COBOL compiler
AQ is an interpreted programming language. It is fast, small, simple a
A whole-program optimizing compiler for Standard ML
Simple and flexible programming language for applications development
fast, portable Pascal compiler using gnu c as intermediate code
Open Watcom C/C++ compilers and tools Fork
A small C compiler
Micro Programming Language - A Portable Language for Micro Computers
An object-oriented script language to embed in any application
Python to python compiler that allows you to use Python 3.6 features
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
A readable lisp in less than 1k lines of C
Open Utlity is series of unix utlity just like gnu for linux / windows
A small, self-hosting 16bit Forth system
dependently typed functional programming language
Parsing for everybody.