CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible. Interpreter, compiler, debugger, CLOS, MOP, FFI, Unicode, sockets, CLX. UI in English, German, French, Spanish, Dutch, Russian, and Danish.
Garnet Common Lisp GUI Library
Garnet is a Graphical Toolkit for Lisp, which offers many advanced features. It was originally developed by Carnegie Mellon's User Interface Software Group and is one of the most feature rich interface toolkits available for lisp. The project has been dormant but some of us are trying to update it. To get the latest stable code, use the subversion repository: svn checkout svn://svn.code.sf.net/p/garnetlisp/svn/trunk garnetlisp-svn
Simple and complete bignum C library
bigz is the continuation of an old BigNum project that started its life as a joined INRIA & Dec project in 1989. The current version includes many fixes and improvements. Although not as efficient as, say, gmp, it is very small, reasonably efficient and extremely portable.