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.
parade pardee pardie pard prude prate pared pride pardi pardy pardah paired perdue perdie parred parody pirate parodoi parried prod prat part priedieu pried perdy preed party proud peart pored perdu protei pyrite pureed period pretty parrot peered poured purred parity parroty proette yperite
irade corrade charade parade tirade trade grade rad gourde hayride crate joyrode crude rode borate corrode barde gyrate aurate prude erode pardee pardie oread grate rate curate berate derate orad urate triad roadeo byroad pirate hydrate dorado reread cirrate serrate cerate karate pride joyride perdie fraud myriad prate broad read ride bourride brad rede bride boride carate farad aortae phorate birdie rude burdie hydride horde grad road weirdie ferrate dread perdue irate maraud aerate narrate braid merde orate raid roadie brede trode bread deaerate lyrate deride gride trad tread sarode tiaraed
parae para par prao sparry pear spare spar pray prau parr parry pariah pareu pareo pare pair sparrow spray