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.
brughs burghs bruise bureaus bras burs bars bris bros byres brees braws birse brews bears biers brose boras birrs buhrs bries braes brays brows bares burse brass bores biros brosy beers boars boors briss brios bursa broos burrs buras barres bursae brassy boreas browse buries braise burros bourse hybris barrios barrows berries bewrays borrows brassie burrows bourrees