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.
hygeists hygieists gests gists geests gestes jests joists jesuits justs jousts
feists deists hygeists hygieists heists fists siestas zests lists reests caestus resits mists beasts cists jests cestas besets quests vestas guests vests geests gests fests vistas visits cestus cestos tests wests wists shists pistes kists leasts cistus deceits rests recits wrists nests resets bests pests besots easts fiestas pestos wrests foists hists maists feasts cuestas joists gists gestes hoists hests testes waists whists chests yeasts