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Welcome to the amazing world of Common Lisp, the programmable programming language.

This site is one among many gateways to Common Lisp. Its goal is to provide the Common Lisp community with development resources and to work as a starting point for new programmers.

Latest news

2019-04-28 outage

Earlier today, there was an outage for

2019-02-09 *Foundation to host ASDF fundraiser!

The Common Lisp Foundation hosts an appreciation fundraiser for the ASDF project, with up to $5,000 donation doubler.


There was a short period of down time today in order to support an off-line reorganization of our file systems required to simplify and strengthen our backups and system maintenance tasks.


Our GitLab instance now has a more open account policy: users with a social login will be able to create an account without approval by an admin.


Latest Lisp news

What is Common Lisp?

Common Lisp is the modern, multi-paradigm, high-performance, compiled, ANSI-standardized, most prominent (along with Scheme) descendant of the long-running family of Lisp programming languages.

Common Lisp is known for being extremely flexible, having excellent support for object oriented programming, and fast prototyping capabilities. It also sports an extremely powerful macro system that allows you to tailor the language to your application, and a flexible run-time environment that allows modification and debugging of running applications (excellent for server-side development and long-running critical software). It is a multi-paradigm programming language that allows you to choose the approach and paradigm according to your application domain.

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