brightside 1.4.0-4.1ubuntu3 (amd64 binary) in ubuntu zesty

 Brightside provides "edge flipping" to allow you to switch to the adjacent
 workspace simply by pressing your mouse against the edge of the screen.
 .
 Brightside also allows you to assign configurable actions to occur while
 you rest the mouse in a corner of the screen. Currently available actions
 comprise:
 .
    * Fade out volume
    * Prevent screensaver starting
    * Start screensaver and lock screen
    * Enter DPMS standby mode
    * Enter DPMS suspend mode
    * Enter DPMS off mode
    * Dim laptop backlight
    * Custom action