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.
folio folia follow fool fowl foil foal foul folly foley flooie foully flooey ghoulie fil fly flu viol flea flee full fail flew flow flue file floe fill fell flay feal filo fall fley feel fila fuel flaw vole
olio polio folio nolo woolie lilo solo kolo solei polo oleo hoolie coolie hollo helio folia bolo aioli soli doolie cholo