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.
cribbed crabbed curbed grabbed grubbed garbed kerbed carabid carbide
ribbed cribbed dribbed robbed rubbed bribed crabbed grabbed grubbed drabbed drubbed
crib caribe caribou crabby scribe