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.
grails gorals grills graals grilse goorals grilles gorillas kraals gruels corals craals crawls krills guerillas growls guerrillas corrals carioles criollos curls carls garrulous carrioles carols creels carles carrels carless carolus curlews creoles careless carrells coreless corollas creolise crewless cureless quarrels
brails rails frails derails grails serails drails trails jarls cereals tirls morales virelais graals aerials reales trawls harls orals rials troilus drawls trills burials broils drills chorals wooralis urials grills triols trials riels perils oriels serials goorals craals ferals earls corals gnarls gorals prills riles virls girls rales parrals carls roils morals brawls grilse ooralis farls marls kraals pearls brills rills frills reoils murals reals borals birls arils crawls ariels zorils krills corrals dirls gharials whirls chorales shrills
grail goral gorilla gorily graal grayly grill grille