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.
cycle cyclo cicale cecal scale socle cicala sickle suckle
cycle heckle scale cackle ruckle pickle muckle nickle cole macule boucle buckle fickle hackle tickle deckle chuckle socle clue clew macle cyclo cicale rackle nuclei mickle knuckle mackle locule huckle locale keckle cockle tackle suckle chicle sickle shackle