What is .BRN file extension?
File created by BrainStorm, a program used for capturing ideas in a structured manner; contains a title for an idea and subpoints, which together comprise a tree of information; may store references to files, pictures, hyperlinks, and other information; can be viewed from different perspectives in the software.
BrainStorm BRN files can be published to HTML for sharing on the Web.
You can see a list of software programs here on easyfileopener.org that can open this file type so that you don’t need to search for it on the web. You can then open your file with this extension using a software listed below.