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.
briony briny browny barony brainy brin brine bruin brain boron baron barny brown burin brawny barney branny baronne biriani born bran bren barn burn bairn borne bourn brawn buran barren borane boreen bourne burnie byrnie brownie
briony rainy turion prion pereion morion barony brainy briny browny virion horny iron irony giron cairny carrion corny crony grainy morrion porny durion chorion
brio bro biro brie broo brow abri