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.
broiler brailler birler burler brawler burlier brawlier
broiler friller whirler triller droolier roilier roller birler brailler frailer railer caroller caroler griller growler prowler reroller driller droller trailer troller shriller
broil barilla brail braille brill brillo brolly