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