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.
parrels parrals parols parles pearls parlays pyrrols parleys parlous paroles parolees payrolls pyrroles purls proles prowls perils prills prelacy paralyse paralyze peerless perilous purlieus pyrolas
barrels ferrels carrels sorrels quarrels parrels reals sorels gruels cereals ariels jurels parrals carrells laurels riels reels oriels creels pyrrols corrals saurels morels
parrel parle parley parral sparely