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.
bitumen batmen boatmen badmen batman beadmen bedemen boatman badman bedamn beadman bedeman
bitumen automen autumn batmen boatmen footmen hitmen gatemen meatmen pitmen potmen putamen routemen stamen titmen