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