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.
garbs carbs grabs grubs carbos carobs grebes caribes carboys carabaos caribous crabs cribs curbs kerbs krubis corbies
arbs carbs darbs garbs barbs shrubs urbs ribs drubs cribs drabs forbs sorbs carbos mihrabs burbs grubs rebs turbos carobs verbs cherubs rubs grabs airbus herbs robs kerbs crabs barbes dribs curbs orbs yerbas
garb carb carbo carboy grab grabby grebe grub grubby