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.
colon colone coloni colony clon clone clown colin cullion clan colleen cline gluon clean callan gallon kaolin cauline galleon galloon kaoline glen kiln
colon solon million lown loon colone galleon colony galloon clone colin jillion kaolin lion halon violin nylon pillion felon pylon flown salon loin solan lone loan ballon talion tolan chalone loony belon gluon melon bullion alone balloon billion aloin cullion coloni gallon clon clown hellion solion violone bouillon mullion phylon pelon eloin pleon felony reloan blown saloon billon zillion talon woolen shalloon
col calo coyly coulee cloy coal coala coaly coil cola cole collie colly coly cool coolie coolly cooly cowl kolo