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.
rays ras raws rias rase rais racy raias raise resay wrasse res reis rosy rees raze race ruse rose rise rows razz roes rues razee resaw resee resew resow reuse roose roues rouse wries
ays bays shays ways says rays pays nays mays lays quays kays gays cays jays hays fays days chays yays as