Lingua::Rhyme   (link)

http://search.cpan.org/~lgoddard/Lingua-Rhyme-0.092/Rhyme.pm
brute force method of finding words that rhyme with each other. i say brute force because it doesn't really have an algorithm for determing whether the words rhyme (at least it doesn't sound like that from the docs), it relies on a database to tell it whether the words rhyme