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.
platina palatine platan platen paladin platane platoon pluton peloton playdown polytene polyteny
platina latina latino lattin gelatin gelatine palatine
plat palate plaid plait plate plateau platy pleat splat