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