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.
callose callous close calls calos callas callus gallows callees gallous cloys coalesce culls cloze coals galls coalless cauls clause cullis caulis gallus calesa caules coalas glossae cullays cullies colossi collies gallies galleys gals cols galleass colessee goalless coulisse galliass gales galas claws kales gloze colas goals clews kills gulls cowls coils class kilos clays glows cools clues kails gaols coles kolos gloss coleus quills glossy quails koalas classy kayles colies coulis glossa galeas galahs quells quolls coolies coulees glassie goalies gulleys gullies kellies killies
callose villose lose wallows cellos xylose mellows pillows gallous lilos fillos callous billows villous filose foliose duellos shallows fallows follows fellows halloes helloes hilloas hillos holloes hollos hulloas hulloos jellos phyllos felloes hallos holloos hilloes bullous loose hallows hellos bellows alloys allows lowse louse halloas hulloes holloas hollows hullos halloos blouse close gallows mallows niellos pilose sallows delouse tallows willows yellows
callow call calo calla callee scall