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.
promoed promote permed premed primed primmed hypermedia permute premade premeet primate pyramid permeate permittee permit
promoed roamed roomed broomed formed varoomed vroomed caromed carromed gormed groomed normed promote wormed chromed