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.
dynels denials tunnels downless toneless tuneless dunghills tenails toenails townless
fennels runnels kennels panels tunnels gunnels chunnels ronnels cannels dynels channels funnels anneals quinelas noels vinals annuls phenols annals anils enols hymnals canals anlas vinyls kneels cineols pineals quinols knells phenyls nils quinielas aneles nonyls finals hymeneals snells