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.
brainy briny brain briony branny brawny bran brin brawn bruin burin barny bairn brine buran browny barony borane barney biriani born burn barn bren bourn borne brown baron boron barren boreen bourne burnie byrnie baronne brownie
rainy brainy grainy shairn tranny terrain deraign murrain granny carny cairny cairn briony briny branny cranny brain brawny barny moraine bairn sarin arraign drain airn train rain tyranny grain sharny
bra bora brae braw bray brie brio bura abri babier