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.
clew claw clue cole callee coolie callow collie coulee col cull calo gale cool kale glow caul cowl glee call gley glue clay coly cola cloy coal coil galea gluey guile cully coaly coala coyly calla colly cooly quale