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.
gaily gally gayly gal galley kail gala gley gall gale goal gaol guile gully golly quail galea coaly galah gluey gulley galeae goalie gul glia kilo kale clay caul coly glow glee coal cloy gull calo glue call kill coil
gaily daily ail oily kail hail maill nail hilly illy gilly jail filly gally leally rally really pily roily sally mail fail dilly dually tally wally willy chally shaley shily pally vail maile coaly chilly wail waly doily tail bialy dally vealy quail bally bailey bail wily ally shaly billy gayly lily mealy noily pail paly rail rawly riley sail silly shoaly