Today I tried a new product of the Perl 6 project: Not Quite Perl. "NPQ" is a subset of the Perl 6 syntax. It runs on Parrot.
To put this in context, Pugs has been the most feature-complete implementation of Perl 6, but has suffered from poor performance and lack of Haskell-enabled contributors.
KindaPerl6 currently supports a subset of Perl6, and is executed with Perl5, but also has slow performance now.
"Not Quite Perl" is a similar effort, using Parrot to execute the code. Parrot is expected to be the fastest performing implementation of Perl 6. Right now "KindaPerl6" and "Not Quite Perl" are developing separately, but there have been discussions to coordinate, according to fglock, a KindaPerl6 contributor.
Here's what I found tried when I tried both technologies today.