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.
recoins recons reckons racons reigns racoons recanes regains requins rockoons rockiness
recoins coins cons icons deacons icones recons racoons beckons reckons racons macons cocoons cocains quoins beacons neocons koines coons conus conns cones cains coigns bacons scones tycoons