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.
gouty gout gutty got gut goat cutty gutta goody gaudy cutey guttae goatee gaiety couteau gat cot god cut gate gaud coat good cute cote gowd gude guid gait goad coot koto quit
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