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.
plateau plate palate plat pileate paleate palliate plead plait pleat platy plutei polite pelite pollute palette playday pelt pled plot palladia pallette puled plaid paillette palet piled paled plied poled poult pilot plotty pullet pilled pelota piolet pooled pealed polled palled pleiad pallet polity pellet pulled peeled payload pullout