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Ikarus - Fast. GPL3.
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Ypsilon - Used for professional game development.
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Chez - Best Scheme compiler in the world. Commercial.
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Larceny - Used for academic research in garbage collection.
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Mosh - Has support in MonaOS.
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PLT - Has support for R6RS among it's many dialects.
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IronScheme - .Net
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Biwa - Scheme in a web browser. Written in JavaScript.
R6RS support is being added to Guile.
There's a project to add R6RS support to Gambit-C.
I keep my libraries in ~/scheme
. I have this in my ~/.bashrc
:
export SCHEME_LIBRARIES=~/scheme
export MOSH_LOADPATH=$SCHEME_LIBRARIES
export IKARUS_LIBRARY_PATH=$SCHEME_LIBRARIES
export YPSILON_SITELIB=$SCHEME_LIBRARIES
export MOSH_LOADPATH=$SCHEME_LIBRARIES
export LARCENY_LIBPATH=$SCHEME_LIBRARIES:~/src/larceny-gl
export CHEZSCHEMELIBDIRS=~/src/chez-gl:$SCHEME_LIBRARIES
Ikarus doesn't come with any SRFIs. Assuming you keep your source code in ~/src
:
$ cd ~/src
$ mkdir r6rs-srfis
$ cd r6rs-srfis
$ bzr branch lp:~scheme-libraries-team/scheme-libraries/srfi
Then adjust your .bashrc
:
export IKARUS_LIBRARY_PATH=$SCHEME_LIBRARIES:~/src/r6rs-srfis
Ikarus and Ypsilon come with OpenGL libraries. Libraries for Chez and Larceny are available.