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.
goggle gaggle goggly guggle googly googol cockle coquille guaiacol
haggle niggle gaggle guggle giggle joggle juggle raggle higgle toggle wiggle boggle wriggle daggle waggle jiggle miggle goggle regale wriggly glee fugle jiggly gale aglee reglue eagle goggly gley bogle agley ligule waggly bugle giggly niggly beagle glue ogle zooglea wiggly