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


Effective March 15th, the mailing list's Subject prefixes ('[<mailing-list-name>]') will not be added anymore.

Additionally, mails won't be held indefinitely for moderation anymore, instead being held for 90 days (or some value chosen by the list admin) and discarded when left unhandled.



The site admins identified a list of mailing lists for which contact with the list owner has been lost. Please check the list for your favorite list or your name.


Due to a failed system upgrade, the system experienced extended downtime on Sunday. Our apologies for any inconvenience.

The maintenance was completed successfully around 18.00 UTC and is a step towards easier maintainance for the system and support the development of new and simplified configuration.


Erik Huelsmann -one of the maintainers- has submitted a proposal for the nearby future of the site. Read the details in his mail to the clo-devel mailing list in the archive. Feedback is very much appreciated.

Read older 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. Curious? Click here to get started!

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).

Common Lisp is a multi-paradigm programming language that allows you to to choose the approach and paradigm according to your application domain.

You may find more of the Common Lisp community at these resources:



If you need technical support, please contact our admins.

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