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.
trailer trawler triller drawler driller troller derailleur drawlier droller drollery droolier
railer frailer trailer griller whirler crawler trawler driller drawler pearler broiler friller brawler brailler birler roilier realer triller shriller
trail drail trawl trawley trial trill triol