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.
refel refell refuel refeel revel refly reflow rifely reflew reveal refill refile refall rueful reveille ruefully ravel revile ruffly ravelly reavail revalue
refel biofuel woeful waeful devel safely rifely feel fell fuel befell bevel feal level kevel liefly refeel refell refly refuel revel rueful defuel duffel wifely chiefly
ref reef reefy reeve reif reify rife rereview tref trefah