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.
duos dos dose dues doss does dows douse dowse doughs dis toes daws dahs taus toys dews dees dies duci doze diss deys toss days taos tuis dais tows dozy duce disci doozy douce toeas touse daisy deuce diazo