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.
gooeyness gooneys gayness coyness goonies goons keenness coons gowns cones koines conies coneys gunnies goannas guineas kens guns cons coins conns conus gonzo guans kanes kaons canes keens kines koans gains
feyness gooeyness fewness coyness gayness keenness newness wryness dueness waeness woeness shyness ness