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.
slave slavey sleave salve solve slieve sylvae sleeve silvae selva silva sulfa sylva salvo saliva salvia sleigh sulpha self
clave slave lave lav delve vulvae sylvae cleave glaive salve belive calve releve helve olive halve sleave slavey alive lava clove glove pahlavi relive silvae love clavi leave valve solve live deleave shelve