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.
grazioso gracioso gracious grazes crazies griseous grosz graces groszy crasis grosze crazes grouses greases grosses grasses curacies graecize curassows carassows coriaceous crases crises crisis crozes gorses krises