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.
politico politic politick pelitic palladic
politico phyllitic illitic clitic colitic oolitic pelitic politic politick zeolitic
polite polity pelite plait poult aplite poplitei split spoliate uplit