BRAIN - PersonalBrain Mind Map File is a file extension that can be used to visualize different ideas of your choice. It operates under a specific program that you must already have installed on your computer. You can also use this program extension when it comes to using links and nodes. It also allows every user to save ideas and even expand them later on when they wish. There is a new database format you will be able to make use of when it comes to using this wonderful program too. It can be accessed and found by going online.