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.
bot bota bout boat bott boot biota booty boite bit bet but bat bootee bootie bought bod bait bute bode bate butt beta bitt beet baht beat byte body batt bite butty bitty buteo betta boody bawty beaut batty battu butte booed bateau battue bawtie beauty