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.
coolie collie cole cool cooly coolly goalie col coulee coil clew coal clue coly cowl cola coala coaly colly coyly callee killie
coolie woolie doolie hoolie ole lie boule holey nellie voile jole mollie hoyle flooie mole killie vole folia whole foley olea olio pole role solei dole blooie aioli tole wellie belie ghillie toile bailie looie wheelie milieu willie hole doolee louie goalie cole billie collie gillie mealie soli wallie joule haole bole mooley ghoulie lieu oleo plie polio sole folio challie
coo cooee cooey coco cocoa coocoo cook cookey cookie cooky chook