Spacedesk is not available for Mac but there are plenty of alternatives that runs on macOS with similar functionality. The best Mac alternative is Deskreen, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Spacedesk and 16 are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to Spacedesk are Duet Display, Tab Display, Weylus and QtScrcpy.
Deskreen turns any device with a web browser to a second screen for your computer
It is much faster on browser.
It's just a tool to mirror your screen to any other device via web. It happens that if you have a virtual second monitor (HDMI dummy) you can share that as your second monitor.
Most users think Deskreen is a great Spacedesk alternative.
Turns iOS or Android devices into efficient second displays or graphics tablets for Mac and PC, delivering zero-lag, high-resolution output with touch, gesture, and touch bar support, hardware-free setup, secure remote desktop capabilities, and end-to-end encryption.
Tab Display seamlessly transforms your tablet into a second monitor, allowing you to extend your screen and stream the virtual display directly to your device. This app supports both Android tablets and iPads for use with Windows and Mac environments.
Weylus turns your tablet or smart phone into a graphic tablet/touch screen for your computer.
I like this software. It's lightweight and easy. I try my smartphone and it worked
QtScrcpy connects to Android devices via USB (or via TCP/IP) for display and control. It does NOT require the root privileges.
It mirrors phone to desktop, not desktop to phone
Turn your iPad, Android tablet, Kindle or smartphone into a high performance extra monitor for your computer
Use your iPad as a wireless display, to extend your Mac desktop. Ever wish you had an extra display for your computer? There’s an app for that! With Air Display, you can use your iPad as an additional monitor for your Mac (Windows no longer supported)
LetsView is a free screen mirroring app that allows users to mirror their screen to a larger display in real time, offering superior quality without lag. Easily connect by scanning the QR code!.
Wireless streaming sends Android or iOS to Mac or Windows, supports Android device control via PC mouse and keyboard, records device screens, captures screenshots, mirrors audio, handles multiple devices at once, file transfers, annotation tools, and secure privacy options.
iMyFone MirrorTo is a screen mirroring app that comes up with the following features. 1) Cast your Android device screen to the Windows computer. 2) Control Android devices using your computer's keyboard and mouse. 3) 1080P HD screen recording.
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Can only use to mirror screen - not extend desktop & it has to run through a browser window.