Free Lisp Projects

Portals

• Wikipedia LISP description
• LISP Association
• LISP portal
• Schemers.org
• Planet LISP (LISP developers blog aggregation)
• CLiki (Free Common LISP project references)
• SourceForge LISP Projects
• FreshMeat LISP Projects
• PLT Scheme

Documentation

• ANSI Common Lisp standard

Scheme LISP Implementations

• GNU CLISP (cvs) (ml) (deb)
• Gauche (cvs) (ml)
• CMUCL ("Carnegie Mellon University Common Lisp") (ml) (deb)
• SBCL ("Steel Bank Common Lisp". SBCL is derived from CMUCL. License: none, its public domain) (cvs) (ml) (deb)
• OpenMCL (OpenMCL is derived from Digitool's Macint*sh Common Lisp) (cvs) (ml)
• Lush (Object-oriented Lisp interpreter and compiler, with an interface to C) (cvs) (ml) (forum)

Scheme LISP Applications & Libraries

• SourceForge Scheme LISP Projects
• FreshMeat Scheme LISP Projects

Common LISP Implementations

• Guile ("GNU Ubiquitous Intelligent Language for Extension". Guile is an interpreter for the Scheme programming language, packaged as a library, which can be incorperated into programs to make these better extendable) (cvs) (ml) (deb)
• Bigloo (ml) (deb)
• Gauche (R5RS Scheme implementation developed to be a handy script interpreter) (cvs) (deb)
• MIT Scheme (deb)
• RScheme (cvs) (ml) (deb)

Common LISP Applications & Libraries

• FreshMeat Common LISP Projects
• UFFI ("Universal Foreign Function Interface". Library to interface Common Lisp programs with C-language compatible libraries. License: LGPL)