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.
tigon takin token daikon toucan tycoon doggone
tigon begone wagon bygone daikon signa ligan goon gown agon agone agony gone coign beigne eikon icon ikon cogon coigne lagoon logon soigne doggone waggon wigan