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.
caveats cavettos covets cavities covetous cuvettes gavots couvades gavottes qiviuts
caveats vats vets feats vatus covets lovats naivetes revets rivets civets savates soviets defats defeats duvets