Arseny Slobodyuk [Institute of chemistry, FEB RAS]
ampy at users dot sourceforge dot net
Porting to WIN32, system evolution 2003 - 2010.

YLisp 3.6 is a compact and fast implementation of Common Lisp interpreter. Implementation uses Guy L. Steele's "Common Lisp: The Language, 2nd edition" book as the standard, large amount, but not all of it is implemented.

Key features: Compactness Interactive debugger Friendly interface User extendable On-line help Ability to create console user interface with random screen access, colors, windowed interface

The interpreter is a funware, which means it is developed as long as the process brings fun to the author. It can be frely distributed for non-profit use.