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.
braw bra brae brew bura bray bora brow bewray barrow bureau borrow burrow bro bur bar brr boor bury bare beer bore bree brie bear brio bier burr birr boar biro brrr broo buhr byre barre beery berry brugh burgh burro burry