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.
coreless careless crewless cureless carless creoles creels corals carles curlews corrals carrels creolize carioles corollas carrells creolise carls curls carrioles crawls gorals carols craals gruels grilles goorals carolus criollos gorillas quarrels graals grails grills growls kraals krills
fireless tireless treeless ireless shoreless coreless careless cureless wireless cheerless juryless oarless doorless merles berryless earless fearless arrowless areoles browless crewless rayless barless weariless airless braless reales carless furless morelles heirless relies peerless creoles aureoles tearless gearless trailless hairless warless
coral corolla creel creole cruel cruelly