Scheme 9 From Empty Space

S9fES is a mature, portable, and comprehensible interpreter for R4RS Scheme. The core interpreter is written in pure ANSI C (C89), so it runs on virtually any platform offering a C compiler. It can even be compiled natively on Plan 9. On Unix-based platforms (plus Cygwin and MinGW), it also offers

The internals of the interpreter are discussed in detail in the Scheme 9 Book

The code of the interpreter is in the public domain. You can download it right here:

Current version: s9fes.tgz (tgz, ~450KB), README
Book version: s9fes-2007.tgz (tgz, ~40KB), README

Mirrors:   [1]   [2]   [3]   [4]   - Thanks!