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.
curran curn crane cranny crania guarani guarana carrion carn corn gran crony cairn grana crown corny groan grain carny quern croon crone gurney carnie granny careen grainy carina corona garron cornua cairny cornea carney carinae coreign coronae grannie
sierran curran ran train bran drawn marron parian brawn buran saurian reran terrain chirren pirana guarana furane loran grana grain garron crane purana marrano guarani gran groan furan brain barren roan rani rain murrain serrano borane perron prawn pyran saran drain durian terrane warren shoran
currie curr curry cur carr carry corrie cure curia curiae curie curio gurry scurry