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.
boatman batman boatmen badman batmen beadman badmen bedamn beadmen bedeman bitumen bedemen
atman boatman batman meatman daman deadman toman potman adman outman batmen meatmen boatmen ataman madman gateman automan hitman beadman badman leadman ottoman footman pitman headman routeman hetman titman