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.
feyer foyer voyeur
eyer feyer tyer tuyere toyer sayer year bowyer buyer foyer voyeur hayer coyer gayer lawyer layer oyer payer wryer sawyer dyer tuyer twyer shyer