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.
reflew refile reflow rifle refly refel refill ruffle riffle revile rueful raffle refuel refell refeel refall revalue reveille ruefully ravel revel reveal rifely ruffly ravelly reavail
flew reflew whiffle duffle defile ruffle riffle flue refile raffle piffle muffle coffle beflea file baffle flow floe fley flee flea flaw reflow rifle souffle deflea waffle shuffle
ref reef reefy reif reify tref trefah