MIT/GNU Scheme is an implementation of the Scheme programming language, providing an interpreter, compiler, source-code debugger, integrated Emacs-like editor, and a large runtime library. MIT/GNU Scheme is best suited to programming large applications with a rapid development cycle.
The releases provide binaries that run on i386 and x86-64 machines under the following operating systems: GNU/Linux, OS X, and Windows. We additionally provide binaries for selected other architectures and systems, depending on the hardware and software that is available to us. We no longer support OS/2, DOS, or Windows systems prior to XP.
Recent release notes are here.
In the future, we plan to deploy a new portable virtual machine and implement a module system. We also plan to finish support for R5RS, but we will not be providing support for R6RS. Other potential projects can be found on the tasks page.
MIT/GNU Scheme is available in binary form for a variety of systems. Note that most problems unpacking or installing this software are due to corrupted downloads, so please check the downloaded file for a correct MD5 checksum before submitting a bug report. Each distribution below has its own list of MD5 checksums.
|Unix binary||i386||unix installation|
|Unix binary||x86-64||unix installation|
|OS X binary||i386||Compiled on OS X 10.9.|
|OS X binary||x86-64||Compiled on OS X 10.9.|
|Windows binary||i386||Windows installation||Compiled on Windows 7 using Open Watcom C/C++ 1.9.|
|Portable C||(any)||how to build||For use on any unix system.|
|Source (.tar.gz)||For unix systems; uses linefeeds as line delimiters.|
Older versions can be downloaded here.
Code for running MIT/GNU Scheme under GNU Emacs is here (or byte-compiled); this has been tested on GNU Emacs versions 20.7 and 21.1, and should replace the file of the same name included with GNU Emacs; it won't work with GNU Emacs 19 or earlier. This doesn't work on Windows or OS/2.
Note that you cannot build a working system from the source unless you have a working MIT/GNU Scheme compiler to do the compilation. (This doesn't apply to the portable C source, which requires only a C compiler.) This means that if the above binaries don't work on your system, it is pointless to try building a custom set of binaries from the source code.
|HTML||MIT/GNU Scheme Reference|
|HTML||MIT/GNU Scheme User's Manual|
|HTML||The SOS Reference Manual|
|HTML||IMAIL User's Manual|
|HTML||1: List library|
|HTML||6: Basic string ports|
|HTML||9: Defining record types|
|HTML||23: Error reporting mechanism|
|HTML||27: Sources of random bits|
|HTML||30: Nested multi-line comments|
|HTML||62: S-expression comments|
|HTML||69: Basic hash tables|
Development of MIT/GNU Scheme, and GNU in general, is a volunteer effort, and you can contribute. For information, please read How to help GNU. If you'd like to get involved, it's a good idea to join the discussion mailing list (see above).
MIT/GNU Scheme is free software; you can redistribute it and/or modify it under the terms of the GPL as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
The Free Software Foundation is the principal organizational sponsor of the GNU Operating System. Support GNU and the FSF by buying manuals and gear, joining the FSF as an associate member, or making a donation, either directly to the FSF or via Flattr.