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.
beauty beaut beat bawty butty beady batty but bateau bet bat batteau beet bait batt bead baud butt baht beta bedu bout boat bute butte betta buteo bitty bawdy baddy battu booty buddy bought bad bed bit bot bud
beauty auto peaty patty natty matey meaty batty bawty beaut gutty butty fatty daut saute tatty rutty tutty putty ghaut haut cutey paty nutty gnatty laity maut gaudy cutty gouty haute catty jutty suety satay duty ratty taut pouty chatty