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.
duel del duello duelli duly dele dual diel deli deal deil dell dull dully dulia delay delly doula dually dol dal tel dale dole teal dill tule dial tela tell dahl teel tele diol doll tael doily telae teloi daily dally telia dolly dooly dilly telly doyly tulle