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