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.
phonemes phenoms fanums venoms
phonemes tonemes benames neems nemas neumes neums gnomes nomes names animes enemas enemies genomes kinemas pennames cinemas bynames renames unmews