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.
racoons racons rockoons recons reckons recoins recanes regains rockiness reigns requins
coons cocoons tycoons racoons cons lagoons deacons cogons rockoons icons recoins neocons bacons beckons logons goons cones coins racons conus icones reckons beacons recons conns scones macons