Historical Implementations: Revision 2
Topaz was Chip Salzenberg's attempt to reimplement Perl 5 in C++ in the late 1990s. Topaz was abandoned after the Coffee Mug Incident.
(Perl 5 on new interpreter engine) was the first attempt to write a Perl 6 compiler for Rakudo. It was developed 2003-2006 by Arthur Bergman and Nicholas Clark