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.
pele pule pile peal plew pale pole peel plea pilea pilei palea pollee pulley paleae paella pol pul ply pal pull paly poly plow pall ploy pily polo plie pial poll play pail pili pool pula puli pill pawl pally pilau pilaw poilu polio