I've taken a list of English words, and examined each of them to see what they sound like (using the PHP metaphone function). This page lists the most common metaphone codes, along with their words. You can also search for a word of your own, and see which words sound similar - and which ones rhyme, and which ones alliterate.
rugola rugal regalia regal raggle recoal recoil regale reglow reguli ruckle regally wriggle wriggly rocaille
rugola coala cola gala gaol glia goal koala kola gigolo jugula coagula googol ligula sigla zooglea
rug ruga rugae ergo erugo frug drug druggie druggy trug