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.
choroid chorioid choreoid chord chored choired chard shroud chared shored cheroot shortie chirred charade cheered chaired charity churred charred short shard shred chert chart sherd shaird shorty shared shrewd cherty chariot sheared sheered sheroot shirred
toroid choroid boride viroid horrid corody neuroid oroide aroid droid hydroid torrid choreoid chorioid sciuroid rid rod
chiro choir chore chorea ichor