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.
rosy rows rose roes resay roose roues rouse ras res ruse raws rase rias reis rais rise racy rees rousseau rues rays raias raise resaw resee resew resow reuse wries
cosy goosy nosy posy rosy choosy os