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.
slue slew sulu sole sale sloe selle solei sal sel sly sol seel silo soil soul seal soli slaw sola saul slay slow sell sill solo sall sail syli sally seely selah silly sully
blue flue value clue glue slue