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.
surreal surreally sural sorrel saurel surely surly sorel seral cereal serail serial sorely sourly sorrily serially zoarial
irreal surreal real carrell ureal areal barrel boreal ferrel carrel quarrel loreal parral parrel rural cereal sorrel corral choreal