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.
parolee parole parle parol prole parley pyrrole payroll prowl pearl pyrola parlay pearly parral pyrrol parrel puerile purlieu purl peril prill poorly purely
parolee role areole aureole variole girolle cariole carriole creole oriole parole prole pyrrole dariole