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.
perilla prill peril puerile pearl prelaw pyrola pearly parlay payroll purl parol prowl parral parrel poorly purely pyrrol
barilla guerrilla gorilla zorilla perilla hydrilla guerilla rill frill shrill krill terrella rille drill corolla brillo zorillo frilly variola grill grille prill brill trill zorille shrilly