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.
proles paroles pyrroles parolees prowls parles parols pyrrols parleys pyrolas purls pyrolyze payrolls purlieus peerless pyrolize perils pearls prills parrals parrels parlous parlays paralyse paralyze perillas perilous prelacy
roles orioles areoles creoles carioles paroles varioles aureoles pyrroles proles carrioles darioles carolus careless hurlies juryless reales browless oarless grilles peerless relies orles curlews earless rales riles crewless growls rilles parles pyrolas nerolis prowls coreless hairless rerolls drools shorls chorales charlies wireless whirlies warless trollies triols trawleys tireless brailles zorilles doorless fireless berryless carles variolas rolls rayless brollies roils merles birles girlies areolas hurleys morales pyrrols ferules aureolas airless reoils rules ireless farles barless arrowless nerols ferlies burleys furless parols cureless carless carols fearless morelles rallies braless gearless arles parleys ferrules parolees rouilles payrolls hourlies broils ceorls heirless barleys drolls girolles tearless trailless treeless trolleys trolls weariless whorls charleys cheerless shoreless yearlies
prole parlay parle parley parol parole parolee prelaw prill prowl purl purlieu pyrola