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.
platan platane platen platina platoon palatine pluton paladin peloton playdown polytene polyteny
platan laten litany gelatin platane platen sultan sultana
plat plate plateau platy palate pelt plaid plait playday plead pleat plot plotty plutei splat