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.
car care carr carry cry gar cor cur cru coir crow cure core guar cory craw gaur crew curr quare kaury curie coria curry curio cowry cooer karoo kauri curia corrie cowrie curiae currie karroo quaere quarry