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.
burghs brughs burs buhrs burse buras burrs bursa buries bursae bourse burros bureaus burrows bros bris bras bars bourrees biros brows birse biers brios bares bries byres braws birrs brose beers brass brews brays boars boors bores briss boras brosy brees braes bears broos boreas brassy braise browse barres bruise hybris barrios barrows berries bewrays borrows brassie
burghs brughs hoorahs horahs hurrahs gerahs jarrahs myrrhs sirrahs surahs dourahs torahs
burgh bur bourree brugh buhr bura bureau burr burro burrow burry bury