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.
peery peer perry pry per peerie peri pere pear prey pree pier pray hyper puree parry perea pereia pur pro par para pyre purr pair poor pore prao parr proa pare prow pour pure prau puri pyro
beery eery veery peery leery cheery cheero beer serry jerry perry ferry deer peer queuer deary very faery weer cheer leary sheer veer cherry queer deray fiery eyry herry merry berry aery query derry jeer kerry terry teary weary wherry leer seer sherry