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.
soli solei sol soil solo syli sola sole soul sel sal sly slay sall sale slue sill slaw seal silo slow saul sell sulu seel sloe sail slew seely silly selle sully ceili sally cilia celli selah zoeal