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.
prosy pros proso praos prows pyros proas prose pross pursy porose pareos parous prissy porous prossie purs pars pores pyres pares parrs prese pricy press prees parse prase pairs puris pours prays paris purse peres piers presa preys perse paras pries praus prise purrs priss peers peris pears praise pursue pareus peruse paries piracy pooris pricey purees hypers pariahs parries peeress peeries perries prez
rosy prosy brosy kouros froes grows bros karroos eros horsy frowsy heros burros pros torous cheeros harrows troys drowsy pharos taros serosa farrows zeroes pursy vireos cerous morose broos churros charros trois toros hydros dross serows cirrous rerose barrios gyros jersey crows borrows proso biros brose karoos euros morrows pareos porose praos heresy barrows gorsy furrows burrows pross parous hearsay brows horsey roes arrows kaross rose morros narrows arose marrows proas guiros erose rows heroes kersey ferrous frows phoresy faros aurous prows vrows cross brios giros saros cirrose curios serous porous zeros pyros gyrose prose ceros gross hydrous tiros torose sorrows trios trows drossy tyros cheerios duros chiros yarrows