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.
silva silvae sylva selva sylvae salvia saliva salve salvo slave solve sulfa slavey sleave sleeve slieve sulpha self
silva halvah sylvae silvae selva salvia saliva pilaf clivia helluva halva lava vulvae vulva volva bolivia leva sylva ulva
sail scilla sill silly silo soil