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.
barbal barbel barbell barbule barrable bearable bearably burble burbly brabble
verbal herbal barbal corbel tribal sourball marbly marble garble hairball gerbil fireball burbly burble barbel robalo warble
barb barbe barbie bribe bribee burb