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.
pouty pout putty potty pot put poet putt paty pity petty putto peaty putti piety patty potto ptooey puttie puttee pat pit pod pud pet pate peat pita pood ptui
pouty gouty out route tatouay doty motey zooty lout sooty knotty tutty gutty rooty knout gout cutty nutty jutty beauty booty pout duty dotty suety rutty rout potty putty hooty cutey bout butty footy jotty tout shout