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.
silvas selvas sylvas salvias salivas salvos salves sulfas selves solves slaves slieves salvoes slaveys sulphas sleaves sleeves selfs sluffs sylphs sleighs sloughs salifies selloffs
vulvas ulvas selvas sylvas volvas silvas halvas luvs salivas halves elves delves salvias sulfas clivias halavahs valves wolves pelvis pelves lavas halvahs solves alfas calves salves salvos pilafs helves selves bolivias lavs shelves
silva silvae salve salvia salvo selva slave slavey solve sylva sylvae