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.
radioing reading redoing rioting radding raiding rodeoing readding rating reding riding ridding redding reeding rooting rodding ratting rotting routing writing retieing retting rutting
radioing biding niding redoing boding riding quoting looting kiting writing rodeoing siding coding gaiting hiding sooting dadoing hoodooing doting tieing tiding toeing tooting voodooing waiting autoing witing baiting chiding aiding doing dieing siting mooting raiding noting retieing quoiting loiding guiding rooting rioting citing hooting coting voting suiting biting hooding dittoing vetoing tattooing photoing toiting voiding toting footing whiting booting wooding ghettoing shooting
radian radon bradoon gradin gradine