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.
proses prosses prossies prises prases purses parses perses prosos pareses presses pursues prisses parises peruses pyrosis process praises prissies prices peeresses prizes prezes precise paresis pierces precess piracies precious precieuse precis
rooses trioses neuroses proses soroses viroses saroses xeroses eroses roses broses pharoses frises resees creases merises cresses ariosos varuses grosses gyrases serosas frisees horses cruses arrases carouses jerseys viruses rises brises greases phereses rases frasses arouses peruses verses irises karosses creeses corses prases brasses grasses harasses terrases peeresses xerosis derrises diereses dresses rerises duresses drowses trasses prossies crases uraeuses ureases chorusses charases whereases courses cerises curses crises grosze heresies birses burses sorosis phoresies pursues prises orrises prosos neurosis rearouses cruises cuirasses browses heiresses perses phrases grouses prisses prosses boreases cereuses arrises resews morasses reuses bruises marses brassies lorises gorses presses ruses hybrises crozes erases krises caresses hearses ceruses reissues virosis wrasses crosses bourses parises kerseys prissies morrises pareses nurses arses foresees braises reassess brisses pharisees erses purses praises raises arises tresses carses reraises uruses drosses diureses seeresses fraises parses rouses xeruses pyrosis diaereses worses druses hydrases torses trusses urases choruses sherrises
pros prossie proso pross prose prosy presa uprose prase pursy proas purse prise prows parous prese pars parse perse press prissy priss purs praos pursue porous pyros porose uprouse