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.
steamed stemmed stimied stummed stymied steamboat sodamide stemmata stomodea stomodaea stomata stomate
teamed reteamed steamed dammed deemed demoed tamed teemed adeemed itemed goddammed modemed redeemed stemmed diademed
steam steamy stem satem stemma stemmy