spacedesk Alternatives

With Duet Display, you can transform your iPhone or iPad into a second display to expand the screen space of your PC or Mac system.

iDisplay is an app that turns a mobile device into a secondary desktop monitor. The app currently supports iOS, Android, Windows and MacOS, and it lets users connect a desktop computer to a mobile device over WiFi. Read more about iDisplay.

NinjaOne (Formerly NinjaRMM) provides remote monitoring and management software that combines powerful functionality with a fast, modern UI. Easily remediate IT issues, automate common tasks, and support end-users with powerful IT management tools.

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Air Display allows extra screens to extend the display size of a Mac desktop. The company behind the product is Avatron Software, which was founded in 2008. Read more about Air Display.

Use Splashtop Wired XDisplay to turn your iPad, Android tablet, Kindle or smartphone into a high-performance extra monitor for your computer.

You can create dual monitors quickly and easily using a USB.

Multiplicity enables a user to control multiple computers with one keyboard and mouse.

Hardware that turns the iPad into a wireless second display

Barrier is a cross-platform software for sharing your mouse and keyboard between multiple computers...

Cross-platform software for sharing your mouse and keyboard between multiple computers

Open Source

Astropad is a free form drawing tool designed from the ground up to take advantages of the features offered by an iPad.

Control multiple windows systems with one keyboard/mouse. Share a keyboard and mouse across multiple windows system.

With its easy setup and high level of versatility, ShareMouse is a great tool if you're looking to use a single mouse and keyboard across multiple computers.

Superbrush clones the screen of your Windows computer on your Android tablet and relays pen input back to your PC.