SXM is almost a complete R5RS implementation (it's major omission is 
lack of bignums and rational numbers). I ported it to plan9. In my 
typical code it runs about two times slower than petite, but your 
milage may vary.

--andrew


 > From: Vester Thacker <vthacker@0xfe.org>
 > Date: June 26, 2004 6:38:27 AM CDT
 >Subject: [9fans] SXM and Plan 9
 >
 >
 >Has anyone used SMX with Plan 9? I'm interested to hear whether it
 >is a good implementation of Scheme under Plan 9. Or should I consider
 >another version? Any schemers out there? Thanks in advance.
 >
 >--Vester Thacker
 >