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.
seedman seedmen sideman sidemen stamen stamina
reedman seedman deadman seedmen rodman hetman routeman reedmen madman leadman goodman gateman bedeman demean bedamn daman beadman badman aidman adman headman sideman woodman