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.
reflies refiles rifles refels riffles refills reflows refuels raffles reviles refalls refeels ruffles revalues roofless reveilles ravels revels reveals raviolis reavails rivals
flies mayflies shooflies reflies sawflies dayflies lovelies files befleas cavallies cuffless refiles flees raffles fleas ruffles fleys roofless fellies defleas waffles piffles flews fillies ghoulies follies flues rifles aphyllies baffles beefless hoofless coffles ghillies leafless souffles muffles riffles floes zoophilies defiles duffles whiffles shuffles
refall refel refell refile refill reflew reflow refly prefile