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.
finials finals finales finalis finalise vinals finless finalize vinyls funnels fennels vanillas veinless veinules phenols phenyls venules
finials biennials denials menials nils vinals toenails nalas nails seniles anneals pineals finales noils manuals hymnals annuals nills canals hymeneals biennales annals manilas renails finalis snails finals tenails anils unnails