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.
carboy carbo carb carabao caribou carob corby caribe crabby crab crib curb garb corbie grabby grubby
choirboy carboy ruby forby foreby herby hereby jerboa carbo corby nearby orby derby turbo whereby
car care carr carry acari scar scare scarey scarry scary