The name is vF7, which stands for "Virtual F7":

• This app intents to export the laptop video output to an external monitor or projector. It means, a graphical interface that mimics Fn+F7 keyboard keys.
• Graphical interface for xrandr.
• This is a small application written in c# with Mono.
• To learn how to use it, please read the user documentation
• This application is only applied for Linux with free oss video drivers. For NON-FREE VIDEO DRIVERS LIKE NVIDIA, USE THE VIDEO SETUP UTILITY FROM MANUFACTURER (in case of nvidia the utility is nvdia-settings).