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.
gayly gally gaily gal gaol goal gala gall gale galea galah gully coaly coyly golly goalie galley galeae gul call calo clay glee gley glia glow glue caul coal gull coly kail kale
gayly gaily shoaly chally wally dually doyley daily wryly rawly rally paly pally mealy leally gally coyly ally coaly vealy feyly bialy bally really sally dally doyly tally waly shaly shyly