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.
libel libelee label libellee liable labella lobelia labial labile lobule lowball labially
libel bel cibol bell abele babel bible foible ghibli cowbell jebel kibla label obeli pibal rebel rubel sibyl