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.
cola coala col kola cole coil cowl coly claw clay coal cool cooly colly koala coaly coyly calla collie coolie coulee cullay coolly glia kolo gaol kohl cloy clue goal call gala caul clew cull koel calo cully galah galea golly quoll
bola viola cola kola mola moola sola tola chola la