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.
creased greased caressed cursed crazed cuirassed coursed grassed cruised crossed cresset crest creosote caroused crosshead corset cruset grazed crusado cruzado coerced grossed groused crust curst crista crusty graced cristae crusade goriest
creased greased dressed pressed parsed cuirassed caressed hearsed harassed versed phrased brassed braised erased arrased reused reseed reseda rased grassed raised praised reraised tressed
crease creasy greasy carassow cares caress cores crass craws cress creese cressy crews cries curassow cures grease acres