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.
creels creoles carrels curls carls careless carrells coreless cureless crewless crawls craals gruels corals carols carles corrals curlews carolus carless creolise carioles quarrels corollas criollos creolize carrioles grails kraals grilse graals gorals growls krills grills goorals grilles gorillas
creels reels sorels cereals parolees morels merls laurels quarrels gruels carrels carrells jurels herls ferrels barrels ariels riels reals oriels parrels saurels sorrels