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.
sel sell seal seel selle seely selah cel sly sal sol sall slaw sail sulu silo zeal sole sale slew soli soul saul slow soil cell sloe syli slay solo ceil slue sill sola cello cella silly sally sully celli ceili solei zoeal cellae sallow scilla