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.
refile revile reflew refill rifle refly refel reveille refuel ruffle reflow rueful refeel refall refell riffle raffle revalue reavail ruefully ravel revel rival reveal rifely ruffly ravelly ravioli
file refile defile fil fila reveille refill puffily fille piffle beefily rifle filo fail voile goofily ruffle zoophile huffily fill duffle whiffle faille riffle flea daffily raffle baffle revile flee reflew muffle souffle coffle flew beflea vile foil flue floe fley deflea waffle shuffle
ref reef reefy reif reify reive review dreigh tref trefah