Common Lisp compiler and runtime
Simple and complete bignum/rational C library with wrappers for C++
Remove Inequality by Production of Knowledge.
Binary Modular DataFlow Machine (BMDFM)
Garnet Common Lisp GUI Library
Converts the sources of the Common Lisp standard to the Texinfo format
Readable Lisp/S-expressions with infix, functions, and indentation
Real-time audio synthesis engine and music programming language
Text scraping and data munging language.
PHP Support for GNU Emacs
a GCC compiler plugin and domain specific language ....