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.
tauten titan deaden detain dudeen tetany detinue dittany duodena titania detainee
tauten ten gotten cutin ketene heighten futon catena patten potteen oaten fatten ratteen neaten rutin mouton sateen lutein stein litten eaten teen whiten retene laten puton ratten quieten poteen latten batten beaten kitten boughten bouton bitten lateen butene louden paten rotten neoteny written muton sitten mitten steno wheaten shotten
taut tauted tat tut tatouay tutted tatty teated tattie tattooed dauted state sauteed autoed daut dautie tate tutty sauted tout stat tutee statue tutti tatted tattoo tutu touted teat tutued