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.
carob carb carbo carboy caribe garb curb crib crab caribou carabao corby corbie crabby grab grub kerb
carob rob arb robe arroba barb barbe aerobe carb carbo garb nearby probe darb
car care carr carry crow karoo acari scar scare scarey scarry scary