Spacedesk is described as 'Extend or mirror your Windows desktop using local network-connected devices like Android, iOS, and others as additional monitors' and is a very popular screen mirroring app in the os & utilities category. There are more than 25 alternatives to Spacedesk for a variety of platforms, including Windows, Mac, Android, iPhone and iPad apps. The best Spacedesk alternative is Duet Display. It's not free, so if you're looking for a free alternative, you could try Deskreen or Weylus. Other great apps like Spacedesk are Multiplicity, Tab Display, Side Screen and QtScrcpy.
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.
Multiplicity offers a virtual KVM solution, managing several computers with one keyboard and mouse. Its remote modes enable cursor transition across monitors and centralized control. Users can transfer files, stream audio, and lock computers without extra hardware, suitable for command rooms, IT desks, and home users.
Enables any device with a browser to act as a second screen for computers, featuring secure end-to-end encrypted streaming, entire screen or app sharing, multi-device connections, cross-platform support, advanced video quality controls, and easy WiFi setup.
Can only use to mirror screen - not extend desktop & it has to run through a browser window.
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.
Transforms tablets or smartphones into graphic tablets or touchscreens for computers, enabling mouse control, screen mirroring, hardware video encoding, keyboard input, stylus support with pressure and tilt on Linux, multi-touch, window capture, and use as a second screen.
I like this software. It's lightweight and easy. I try my smartphone and it worked
Allows extension of a Mac or Windows workspace to iPad, Android, macOS, or Windows devices as portable second screens, supporting multiple connections, wireless linking, cross-platform use, and practical multitasking like separating documents, chat, or meetings.
Transforms any Android tablet into a Mac's second monitor using USB-C for low latency or WiFi with QR pairing, featuring H.265 hardware streaming, touch input, HiDPI support, lightweight design, Gaming Mode, open-source customization, and virtual display window management.
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
Convert an Android device into a high-performance USB monitor for Windows 10, enabling duplication or extension of the desktop, low-latency operation, graphics tablet functionality, pressure-sensitive stylus use, and compatibility with phones or tablets.
Transforms a tablet or smartphone into an additional wired display using USB for Windows or Mac, enabling high-performance multitasking, touch control, auto landscape or portrait mode switching, support for creative and office apps, and secure connectivity.
Turn your Mac, Windows, and Linux computers into one seamless workspace with shared keyboard, mouse, clipboard, file transfer, and virtual displays.
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!.
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Multiplicity make it possible to use your mouse and keyboard for 2 pc while Spacedesk make a laptop etc. an additional screen for your desktop.