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.
flay flawy fly fley flaw fila flea filly feyly folly folia fella fully foley felly fellah foully flooey flu fil flew feal fowl flue foal flee full file vela flow fell foil fall fill fuel fool foul filo feel fail floe fille fillo folio phyla vealy villa viola voila
lay allay belay flay clay cullay play relay slay delay waylay la