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.
saloon salon solon salina saline solion slain solan silane sileni solano sullen zillion
balloon galloon shalloon loon saloon chalone flown loin galleon violone clon loan lion bullion felon lown hellion colone solon nylon clown loony aloin melon mullion pelon pleon reloan talion colon colony pylon salon coloni alone pillion halon gluon jillion lone belon gallon talon zillion million cullion clone billion ballon felony eloin bouillon blown billon solion phylon
sal sail sale sall sallow sallowy sally saul seal silo sloe slow solo