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.
whiffers wafers wivers waivers woofers weighers wavers weavers weevers
buffers doffers suffers puffers goffers gaffers gauffers feoffers differs coffers duffers chauffers zaffers piaffers quaffers niffers chaffers whiffers offers reoffers lifers loafers wafers fears hoofers defers reefers woofers zaffirs feres kaffirs feoffors reifiers gofers roofers heifers chaufers refers deifiers zaffars knifers zaffres fifers coiffeurs chafers defiers chauffeurs