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.
title tittle tootle tattle dottle total tidal dottel diddle toddle detail tautly tiddly tidily diddley dottily tattily tidally totally doughtily
title tale nettle mottle pettle kettle little cuttle retile radiale rutile idle coital footle sidle vital sedile stele tele stole tile dottle fettle audile tole tootle tuille wattle toile chital motile tule taille futile mutule motley outlie guttle kittle cuittle rattle pottle rootle vittle cattle fitly settle citole battle stale edile stile aedile style etoile tattle bottle tittle beetle utile butle whittle mettle shuttle
tit titi tittie titty toit toited