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.
bras buras braws brays brass braes boras braise boreas brassy bars burs bris bros bureaus brassie bewrays brose boars birse bears bores brows byres buhrs biers braza brees brios brace boors brosy bursa briss birrs beers braze bares biros burse brews broos bries burrs burghs browse bursae buries burros brughs braize barres bourse bruise hybris barrios barrows berries borrows burrows bourrees
ras horas charas terras durras douras suras sirras paras murras moras mbiras maras liras lauras koras varas arras eyras eras buras bras boras auras muras nairas sierras soras surras duras hydras toras tiaras