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.
foamy foam fame fumy fem feme fume
foamy loamy shammy womby tommy doomy roomy rammy mommy mamey beamy boomy foam hammy homey homy jammy commy gamay gamey gammy gamy lamby loam mammy pommy roam seamy tammy whammy chammy shamoy