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.
claw clay clew cola calla coala cullay callow col glia calo cole cool cull caul coil cowl coly coal clue call gala cloy glow kola coaly colly cooly coyly cully galah galea koala
law blaw bylaw flaw claw pilaw slaw la