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.
gonzo goons gowns goannas gooneys goonies cons guns gooeyness
gonzo bonze phonos ginzo monos onos
goanna gone gonia goon gooney goonie goony gown agon agone agony