A click on the scan button starts a system scan which took only a matter of seconds on my system. All drivers are afterwards listed in a table in the main program window. They can be sorted by name, date, version, manufacturer and several other parameters with additional filters being available from the top menu. It is for instance possible to list only non-Microsoft drivers.
One or multiple drivers can be selected by checking the box in the first column of the table. A click on the Backup button will open a configuration menu where the user can pick a destination folder for the backup.
The Restore button works in the opposite direction. The user has to browse to an .inf file that has been created by a previous backup so that the driver can be restored. There is also the option to save and print a list of all drivers currently installed on the system.
The website of the developer is no longer online. You can download the latest version of Double Driver here from Ghacks instead. Double Driver (765)
Please note that the tool to backup and restore drivers is no longer updated, which means that it will eventually become incompatible. Alternatives are Driver Magician Lite or Slim Drivers.