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.
rootle rotl retool rutile rattle retile ratel ratal reddle retail ridley riddle rattly ritual raddle retell ruddle radiale radulae rattail retally rowdily ruttily ritually
footle tootle rootle wattle motile pettle hotel kittle vittle butle bottle etoile boodle beetle battle botel retile nettle total shuttle cattle notal guttle pottle cuittle rotl citole sotol stele stole style dotal tattle tittle hotly mettle doolie kettle noodle rattle little poodle motel dole doolee futile mutule toile tile fettle tale tole cuttle tele tule rutile settle stale stile stoolie doodle dottle title outlie motley mottle utile whittle yodle
root rooty rot wrote protei route grotty rout grot broody brood roto rotte roti rote rota rood riot grotto protea trot