This post discusses wirelessly projecting and screen mirroring your Windows computer or laptop to an external display like a TV or a Projector using Miracast technology.

If you need a second screen, you can use your laptop screen as an External Monitor to get more space for apps. See how it's done!

If you need to expand your screen real estate, and you don't have a second monitor, you can use another Windows 10 computer, and here's how.

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.

Head to Cliff’s site, Monkey Slaps, and you’ll find a guide on how to use the PC app to project your Windows Phone screen.

How Do I Project My iPad Screen for an Audience?. In addition to enabling you to check your email, watch movies or surf the Web, Apple's iPad tablet is also useful as a portable projection device.

How to Use Split Screen on a Chromebook Google’s ChromeOS also supports split screen, and there are a few ways to use it. You can do it much like Windows: ...

Want to improve multitasking on the iPad? Here's how to split screen on iPad and run two apps at once in Split View and Slide Over mode.