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.
socle scale sickle suckle skoal sokol scull scowl scaly cycle scall cicale sickly zocalo soggily zooglea sequelae squillae zoogleae zoogloea zoogloeae
socle clue macule locale mackle cole coolie keckle boucle buckle scale bogle cicale focal rackle deckle ogle tickle nickle chuckle muckle fickle clew cycle macle local locule cackle huckle cockle hackle vocal heckle vacuole ruckle sickle pickle suckle nuclei tackle knuckle chicle mickle shackle