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.
rivieres rivieras rivers reivers rievers reveres reifiers rovers revers ravers reverse reverso reavers refires referees reovirus refers reefers refries roofers reoffers reveries roughers
rivieres fierce reivers refires knifers lifers liviers fires viers vireos quivers vires affaires deifiers spheres waivers fifers chevres rivers aivers bouviers heifers reifiers referees livres leviers livers jivers givers caviares feres vivers fivers defiers sivers divers rivieras wivers reveres shivers
riviera riviere reiver riever river privier driver