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An implementation of the Scheme programming language built to be used as an extension language. It's a library you can link into your programs. Your program has full access to the interpreter's data structure, so you can extend Guile with your own primitives, datatypes, and syntax, and tailor the language to your application. It also lets more people use your language, as they needn't learn the internals of your app. They just need to understand the language and the primitives you've provided, and they can trade and share ideas by passing around scripts without you. It has arrays, lists, modules, objects, first class functions, and garbage collection.


Programmer manual available in HTML format from

"IRC irc:// " IRC Help channel

Related Projects


LicenseVerified byVerified onNotes
LGPLv2.1orlaterKelly Hopkins13 July 2009

Leaders and contributors

Robert Merkel Contributor
Anthony Green Contributor
Martin Grabmueller Contributor
Tim Pierce Contributor
Jim Blandy Contributor
Roland Orre Contributor
Bill Schottstaedt Contributor
Matthias Koeppe Contributor
Andy Wingo co-maintainer
Tom Lord Contributor
Jost Boekemeier Contributor
Russell McManus Contributor
Dirk Herrmann Contributor
Michael Livshin Contributor
Ludovic Courtès co-maintainer
Tom Tromey Contributor
Keisuke Nishida Contributor
Stefan Jahn Contributor
Gary Houston Contributor
Neil Jerram Contributor
Mark H. Weaver co-maintainer
Will Fitzgerald Contributor
Marc Feeley Contributor
Thien-Thi Nguyen Contributor
Greg Badros Contributor
Radey Shouman Contributor
Marius Vollmer Maintainer
Mark Galassi Contributor
Thomas Tanner Contributor
Greg Harvey Contributor

Resources and communication

Audience Resource type URI
Support Newsgroup comp.lang.scheme
Help Newsgroup gnu.announce
Bug Tracking E-mail
Developer VCS Repository Webview
Developer E-mail
Support E-mail
Help E-mail

Software prerequisites

Kind Description
Weak prerequisite readline (for command line editing)

This entry (in part or in whole) was last reviewed on 18 May 2014.


Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the page “GNU Free Documentation License”.

The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.

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