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.
balloter bloater blotter blottier billeter bolter belter balder balladeer bleater blatter blighter bloodier balladry blader bolder bladder bleeder boulder bowlder builder bladdery bouldery
balloter belter quilter jilter joltier haltere miltier melter moulter vaulter violater floater plotter pelter polluter falter realter fluter elater salter faultier saluter blotter slater bloater zealotry bolter dilater colter tilter kelter welter gloater billeter alter philter guiltier maltier jolter clouter helotry molter milter palter vaultier halter flouter politer plater poulter liter later relater loiter saltier filter siltier lotter slotter allotter zoolater looter diluter coulter welldoer kilter shelter
ballot bailout ballad ballade balled ballet ballute