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.
boot booty bot bootie bootee boat bout bott bota boite booed biota boody bought bat bod bit bet but bode bitt bute bate beta body bait butt beet batt beat baht bite byte battu batty bawty beaut betta bitty buteo butte butty
boot foot hoot coot loot moot oot root soot toot shoot
boo boob boobie booboo booby bo