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.
hitmen hitman hetman headmen headman
batmen boatmen pitmen titmen hitmen footmen meatmen potmen goodmen bedemen hetman hitman tamein madmen autumn beadmen pitman radiomen potman rodmen demean aidmen footman deadmen seedmen leadmen headmen admen automen gatemen daimen titman meatman atman putamen routemen stamen outman bitumen batman reedmen boatman badmen sidemen woodmen