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.
coalesce coals coles coalless colessee coalas coleus calesa caules colies goalies cols coolies collies callees coulees goalless calos coils gales goals clews cowls kales cools calls cauls clues colas galeas callus koalas callas caulis kayles coulis callose callous galleys colossi gallies cullies galleass gals coulisse culls galas galls cloys kails koels gleys gaols kolas glues clays gules kolos cloze close colza claws kohls class glace glees classy clause cullis galahs gallus guiles quails quolls
coalesce lease fleece please release les
coal cole callee coala coaly coulee scale col