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.
furzes frizes freezes friezes frizzes frizzies frises forces farces fraises frisees frasses farcies foresees verses phrases varices varuses viroses viruses pharoses phereses pheresis
furzes razees friezes freezes frizes farces erses forces gorses mirzas marses orzos crozes crazes perses corses prezes carses purses heroizes terces frizzies torses verses breezes razes curses hearses razzes arses frizzes bourses braizes birses grazes nurses merces brazes parses crazies pierces courses prizes coerces sources horses tierces burses worses
furze furzy fours friz frizz frizzy froze furies furioso furious furrows furs