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.
code coude cod codeia cote coda cade coed cooed coatee coteau cottae cooeed caddie cuddie goodie cootie cud cot god cad couteau cued goad quod coot caid good coat cadi cute cate gowd gude caddy coati cotta cuddy cutey cutie goody guide quote
bode geode code lode mode node ode rode diode de od