Profile Isaac Show my name on the attendees list for events I am attending: Yes The reason why you can't open your .Br3 file is because you don't have the EXACT .Br3 software to open that EXACT .Br3 file extension. What could be more frustrating? How To Open Br3 File Last activity: on 12/08/2016 Joined: on 09/08/2016 http://www.fileviewpro.com/en/file-extension-Br3 Design quotient Earn DQ points by participating in a challenge. What are (DQ) Points? DQ points are a measure of your contributions, they correspond to how active you are in the Research, Ideas and Evaluation phases of a challenge.