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