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.
kobold gobbled cobbled kibbled cabled cobalt gabled goblet cabildo gabbled caballed gabelled quibbled
bold kobold wabbled doubled dabbled ribald piebald nobbled mobled fabled kibbled gobbled gabled gabbled cobbled cabled bald hobbled bubbled bobbled babbled abled bolt bled quibbled nibbled pebbled rabbled rubbled dibbled tabled wobbled