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.
coulees coles colies caules coulis coleus cols coolies collies cullies callees cauls coals cowls culls coulisse coalesce coils glees clews gules colessee colas cools clues coalless coalas guiles cullis calesa caulis cullays colossi queleas gullies goalies gulleys callous guls goalless goals gulls calls glues kohls kolos gales gaols kales close calos gleys cloys kolas colza keels class koels cloze clays claws quills classy galeas kayles koalas callus callas quails quells clause quolls callose galleys gallies gallous kellies keyless killies
coulees lees tulles doolees pules muleys melees gules guiles glees caules callees joules gelees ghoulies flees boulles boules bailees allees mallees mules pollees rules tules yules les