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.
cribs caribes carbs crabs curbs caribous carbos carobs carboys corbies carabaos garbs grabs grubs kerbs grebes krubis
ribs cribs dribs arbs rebs kerbs grabs curbs carobs robs carbs ribes rubs airbus darbs caribes tribes urbs shrubs crabs barbs orbs garbs mihrabs grubs drubs sorbs bribes drabs zaribas cherubs turbos oribis burbs barbes carbos herbs verbs forbs yerbas
crib carb carbo carboy caribe caribou corbie corby crab crabby curb scribe