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.
summate summed summit smote smite samite somata somite sambaed smit smut symbiote seamed seemed smutty someday symbiot
mammate gemmate teammate roommate summate mate commata matey matte hamate humate comate ramate gummata limbate mammati remate commute gummite lemmata mat