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.
polo polio pol poll ploy pool pole poly plow poilu pollee pillow ply pul pal pillowy puli pula peal pall plie pily pawl paly peel pile pill pale pule plea pili pail play pial pele plew pull palea pally pilau pilaw pilea pilei
bolo kolo nolo polo solo cholo lo