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.
pottle pettle poodle pettily patellae padle patly petal paddle peddle piddle puddle patella
battle dottle tittle settle nettle pettle bottle vittle wattle kettle kittle rattle shuttle tattle cuittle whittle mottle pottle little fettle guttle cattle mettle cuttle tele stele kittel dottel outlie nettly footle retile stale utile tootle beetle chattel stile wittol rutile mutule style rattly rootle futile tule tale title motley motile stole tole citole tile butle
potty potto pot pouty spot pout putto poet putti puttee putt petty pitta petto petti patty pattie pattee puttie putty spotty