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.
sail sal sill seal soil saul sale sall silo silly sally sallow scilla sol sel sly sallowy soli zill slue syli solo sloe ceil slaw soul slew sell slow zeal seel sulu sole sola slay ceili cilia seely selah selle solei sully zoeal
ail bail fail vail hail jail kail quail mail nail pail rail sail tail wail al