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.
pearls perils parles parols parlous parleys parlays parrels parrals paroles purls payrolls parolees perilous paralyse peerless prills prowls pyrrols paralyze perillas purlieus proles prelacy pyrolas pyrroles
earls marls gnarls farls carls pearls jarls harls perils brails craals graals rales aerials parles parols corals grails laurels brawls farles morales gharials carles burls herls kraals orles byrls purls sorrels churls chorales whorls urials trawls tirls drails derails saurels reales serials jurels ceorls birls pyrrols parrals reals rials knurls parrels curls corrals aryls frails ooralis ferrels nerols girls orals morels crawls merles hurls carols furls arils borals barrels arles merls quarrels burials ferals gorals murals rails goorals morals nurls beryls birles carrels cereals virls sorels serails zorils dirls drawls trails trials whirls wooralis chorals shorls
pearly pearl parlay parle parley parol parole parolee parral parrel payroll peril perilla puerile sparely