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.
wagon waggon weakon waken wigan woken weaken
agon wagon begone pagan goon gown kaon agone agony gone bacon deacon beacon cogon lagan lagoon logon macon racon doggone waggon bygone tigon weakon