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.
call calla callee callow calo gall caul coal cull coaly coala colly gally cully cullay galley collie coolly col gal kail clay gala cowl coly cloy clew claw gaol gale kill cole clue kale goal cool gull cola coil galea quill gully quale cooly gaily quail gayly golly galah kelly coyly quell koala quoll
all ball fall hall call gall lall mall pall sall tall wall shall al