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.
growler growlier caroler crawler griller grueler crawlier grillery grueller caroller curler coruler crueler cruller curlier kruller crueller corollary quarreler quarreller
prowler growler trawler roller brawler brawlier broiler caroler caroller crawlier crawler growlier reroller drawler drawlier droller droolier troller