Armed Bear Common Lisp Alternatives

Steel Bank Common Lisp (SBCL) is a high performance Common Lisp compiler.

Open Source

Hy is a wonderful dialect of Lisp that’s embedded in Python.

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CLISP is a portable ANSI Common Lisp implementation and development environment by Bruno Haible.

CMUCL is a high-performance, free Common Lisp implementation.

Clozure CL (often called CCL for short) is a free Common Lisp implementation with a long history.

Open Source

ManKai Common Lisp (MKCL) aims to be a full implementation of the Common Lisp language in...

Leading commercial Enterprise Development Tools and dynamic object-oriented Common Lisp development tools including Allegro CL with AllegroCache, an Object Database that provides Object Persistence in Lisp, native to the Lisp langauge.

Guile is the GNU Ubiquitous Intelligent Language for Extensions, the official extension language for the GNU operating system.

GCL is the official Common Lisp for the GNU project.

Clojure is a dynamic, general-purpose programming language, combining the approachability and interactive development of a scripting language with an efficient and robust infrastructure for multithreaded programming.

Open Source

Racket (formerly PLT Scheme) is a modern programming language in the Lisp/Scheme family, suitable...

Open Source

LispWorks is a commercial implementation and IDE for the Common Lisp programming language.

Cross-platform chess game.