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.
spin spine spiny spinny supine span spun spinney spawn spean spoon spoony spooney cioppino
pin lapin lipin lupin pippin repin spin tiepin chopin