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.
roommate roomette ramate roomed remate roamed rimmed remote rammed remade rumbaed rimed remet remit ramet ramada reamed reemit remedy remeet remuda rhymed
mammate gemmate teammate roommate summate mate commata matey matte hamate humate comate ramate gummata limbate mammati remate commute gummite lemmata mat
room roomie roomy broom broomy vroom groom rom