The Impromptu Scheme interpreter was initially based on the
TinyScheme interpreter written by Dimitrios Souflis
but has since been substantially rewritten.
TinyScheme was inturn based on the MiniSCHEME interpreter written by
Akira Kida and Atsushi Moriwaki.
Impromptu uses parts of Marc Genung Poirier's DFX AU Utilities
Impromptu uses parts of Satoshi Nakagawa's CocoaOniguruma.
CocoaOniguruma Copyright (c) 2008-2010 Satoshi Nakagawa This version of CocoaOniguruma contains a part of Oniguruma 5.9.2 source code.
CocoaOniguruma is released under The New BSD License CocoaOniguruma Homepage
Impromptu includes Andrew Wrights Scheme pattern matching System. Andrew's Library is in the Public Domain.