Scheme compilers
for a online Scheme compiler you could try
[login to view URL]
it will all the sample
the 'compilers' on [login to view URL], [login to view URL], and [login to view URL] do not seem to work well
Installable Scheme interpreters
Racket [login to view URL] & [login to view URL]
MIT Scheme [login to view URL]
Kawa: Scheme interpreter writen in Java[login to view URL]