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.
knifers niffers knaveries newwavers navars
heifers lifers fifers knifers chaufers divers wivers defers duffers roofers deifiers reoffers suffers livers rivieras fears loafers waivers chauffeurs gaffers reifiers reefers piaffers buffers niffers feres goffers bouviers leviers quaffers gofers chafers quivers viers whiffers defiers woofers sivers wafers rivers differs feoffers zaffers aivers rivieres liviers gauffers chauffers doffers chaffers reivers refers puffers fivers offers vivers coiffeurs coffers jivers givers hoofers shivers