You can use any phone or tablet as a secondary display on Windows. This can be helpful if you want to increase your productivity or if you want to use your phone or tablet as a second monitor.

Hook up an Android tablet to your computer as an easy alternative to buying a second screen, with this handy guide.

Universal Control is coming in macOS Monterey, but you can use any device as a second monitor right now with the right software or accessories.

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.

Duet Display: A premium app that works on both Windows and macOS, Duet lets you use your iPad or Android tablet as a second screen. It supports lag-free performance and wired or wireless connections.

You can use it as a TV, a notebook, a sketchpad, a gaming console, or a laptop (with the right accessories). But one of its most underrated features is its ability to be used as a second monitor.

How to use an iPad as a second screen for Windows Windows can’t use your iPad as an extra display out-of-the-box, but there are a few third-party apps you can use as a workaround.

It's easy to use your iPad as an extra screen for your Mac. Here's how to connect your Mac and iPad so you can use the iPad as a second screen.

For example, you can use your iPad as a second screen for your Mac with minimal effort, and there's no need to fiddle with annoying cables and questionable software hacks.