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.
parlous perilous parles parols pearls parrals parrels paroles parlays parleys paralyse payrolls purls purlieus parolees perils prills proles prowls pyrrols paralyze peerless pyrroles pyrolas
parlous barlows variolous carolus garrulous querulous perilous
parlay parle parley parol parole parolee payroll pearl pearly