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.
patience potence patency patens patins pattens potency patines patinas patinize pittance hypotenuse patness poteens pudency potteens poutines pettiness pottiness pitons putons
audience patience dienes tenace cadence potence radiance
paten patin patina patinae patine patten