Workflow: Tablet as Extra Monitor

Android Tablet or Another Computer as Second monitor

I ended up with spacedesk

1. Included some support (laptop only, Settings > System > Projecting to This PC, Wireless Display)
2. spacedesk. simply the best, even via LAN
3. for USB - use Splashtop Wired XDisplay (better FPS, but not really), seems shitty
4. TwomonUSB / TwomonAir but seems shitty

pavlobu/deskreen: Deskreen turns any device with a web browser into a secondary screen for your computer Deskreen and scoop install deskreen

kbumsik/VirtScreen: Make your iPad/tablet/computer into a secondary monitor on Linux. is Linux only

Interesting and Similar but not exactly the same tools

• H-M-H/Weylus: Use your tablet as graphic tablet/touch screen on your computer.
• haimgel/display-switch: Turn a $30 USB switch into a full-featured multi-monitor KVM switch