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.
got gout goat gouty goatee gut god gat cot goad gait koto gate gowd coat coot good cote cotta quota coati gutta goody kotow quoit gutty quote coteau cottae gaiety gateau goodie guttae coatee cootie kowtow