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.
refine ravine revenue ruffian raven ravin riven roven roughen
affine fine refine define fin vine divine fain dauphine boffin ruffian bowfin foin ravine caffeine fino ovine coffin muffin bovine biffin puffin savine fane caffein tiffin
ref reef reefy reif reify reive review dreigh tref trefah