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.
carven craven caravan graven carragheen corvina corvine
carven raven riven roven craven graven parvenu proven driven shriven
carve carafe corvee crave curve curvey curvy garvey scarf scarify scarph