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.
agone agon agony acne again akene akin
agone bygone doggone begone gone coigne wagon gown tigon cogon soignee beigne signee agony logon agon goonie gane lagoon lagune gooney scone goon soigne cone coney waggon koine chaconne