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.
saliva salvia salve salvo selva silva sylva slieve silvae salify sylvae slave solve slavey sleave sleeve sleigh
saliva vulva sylvae silvae selva relive olive clivia helluva halvah halva vulvae volva lava bolivia belive alive live leva salvia silva sylva ulva
sal sail sale sall sallow sallowy sally saul seal soli syli