Current implementations (Jun 2009)

• "Rakudo Perl" (Perl 6 on Parrot)
• http://rakudo.org/
• Perl 6 on Parrot

• Pugs (Haskell)
• http://www.pugscode.org/
• Early version of Perl 6, written in Haskell

• smop / KindaPerl 6
• bootstrapping version of Perl 6
• C-based engine

• Elf
• Ruby-based grammar, p6 with p5 backend

• STD.pm
• Reference grammar for Perl 6