spacedesk is a free app that lets you use an Android tablet as a second display for your Windows PC. Learn how to set up and use it.

How to Use spacedesk to Mirror or Extend Your PC’s Screen Onto an Android Tablet Before you can mirror or extend your Windows PC’s screen to your Android tablet, you need two things.

Duet Display lets you use any Android device as a second screen for your Mac, whether wired or wireless, giving you extra space for multitasking.