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.
cons conns coons coins conus cones coneys conies cans coyness kaons gowns koans cains canso goons canes canoes quoins koines cannas gooneys goannas goonies guns kens kins gooeyness kinas quins kenos kines gains guans kanas kains kinos kanes gonzo keens
boons cons toons tauons zoons scions cions pons peons ons neons eons fons phons hons ions aeons goons paeons tons dons sons hysons poons pions noons coons muons moons mons loons lions kaons wons