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.
polio polo pol plie poly puli poll pili pole pool poilu pilei pallia pollee ply pul pal pall pawl ploy pula plow pial pile peal plew pule peel pele pale pill play paly pail plea pily pull
olio polio folio nolo woolie lilo solo kolo solei polo oleo hoolie coolie hollo helio folia bolo aioli soli doolie cholo