Scheme

CMU Scheme Repository
Part of the greater CMU AI Repository. Has a large overlap with the Indiana repository.
http://www.cs.cmu.edu/afs/cs.cmu.edu/project/ai-repository/ai/lang/scheme/0.html

The comp.lang.scheme FAQ
Usenet discussion group FAQ archive.
http://www.faqs.org/faqs/by-newsgroup/comp/comp.lang.scheme.html

Hello, World Program
Scheme version of this canonical first program.
http://www2.latech.edu/~acm/helloworld/scheme.html

Indiana University's Internet Scheme Repository
The definitive resource for Scheme on the net. Includes a large catalog of implementations, useful source code, and documents, many of which you won't find anywhere else.
http://www.cs.indiana.edu/scheme-repository/SRhome.html

Lisp and Scheme Meetup Day
Meetup with other local programmers interested in Lisp, Scheme and other functional programming languages.
http://lisp.meetup.com/

MIT Project MAC (Switzerland) Archive
The MIT Project on Mathematics and Computation (Switzerland) has a public FTP archive with Scheme implementations, programs, and curiosities.
ftp://swissnet.ai.mit.edu/pub

Online Bibliography of Scheme Research
Bibliography of articles, theses, and technical reports related to the Scheme language. Where an online version of the paper is available, a link is provided.
http://library.readscheme.org/

Practical Scheme
Libraries and extensions to use Scheme as a production tool, to process daily chores for system engineers and programmers: parse files, generate reports, watch processes, provide small GUI wrappers, etc. English, Japanese.
http://practical-scheme.net/

Reports on the Algorithmic Language Scheme
Specifications for the programming language Scheme.
http://swissnet.ai.mit.edu/~jaffer/Scheme.html

RRRS-Authors Mailing List Archive
An archive of the mailing list of the authors of the RnRS, from 1984 to 1998.
http://swissnet.ai.mit.edu/projects/scheme/rrrs-archive.html

Scheme Programming Language
Growing article, with links to many related topics. [Wikipedia]
http://en.wikipedia.org/wiki/Scheme_programming_language

The Scheme Programming Language
By R. Kent Dybvig; Prentice Hall, 1996, ISBN 0134546466, 2nd edition. Reference book, describes R5RS Scheme in style similar to K and R [Online full text version].
http://www.scheme.com/tspl2d/

The Scheme Programming Language
Main page at MIT, Scheme's birthplace; short list of implementations, some general documentation, information on the MIT Scheme implementation, some random links.
http://www.swiss.ai.mit.edu/projects/scheme/

The Scheme Underground
An effort aimed at developing useful software packages in Scheme for use in research projects and for distribution on the net.
http://www.ai.mit.edu/projects/su/su.html

Schemers, Inc.
Publishes and carries excellent educational materials, including books, using the Scheme programming language. Has Windows and Macintosh Scheme interpreters and a Scheme-driven state-of-the-art solid modeler.
http://www.schemers.com/

Schemers.org
A collection of resources for the Scheme language. Information on all aspects of Scheme: implementations, papers, and code. Maintained by the Rice Programming Languages Team, the folks behind MzScheme and DrScheme.
http://www.schemers.org/