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.
cade cad caddie cadi caid cate code coude caddy cottae codeia cattie coatee cuddie cud cat cod gad gadi cote coda goad quad gate gude qaid gaed cute gaud coed kadi cued coat qadi cuddy gaddi cutie cutey cotta guide gaudy coati catty cooed quate
bade fade hade jade cade lade made sade wade shade de ad