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.
toucans tigons takins tokens decanes tycoons tackiness daikons deacons dickens
toucans cans chicanes decanes scans recanes pecans cocains iguanas jacanas queans guans guanos canso canes cains chicanos