Free tools: PAR::Packer (PAR), PerlBin, Cava Packager. All are maintained, work well with the latest Perl, and are reliable. See my blog post for some use anecdotes.

And then there is TinyPerl, which hasn't been updated in 4 years, only works with the perl version it was built with (5.8.0 IIRC), and at least using glob on it makes it crash.

Oh, and yes, both PerlApp (ActiveState) and perl2exe (IndigoStar) are reliable commercial tools.