The best open source alternative to Spacedesk is Side Screen. If that doesn't suit you, our users have ranked more than 25 alternatives to Spacedesk and ten of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Spacedesk are Deskreen, Weylus, QtScrcpy and VirtScreen.
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.
Vietnam
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.
Ukraine
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.
QtScrcpy connects to Android devices via USB (or via TCP/IP) for display and control. It does NOT require the root privileges.
China
Make your iPad/tablet/computer into a secondary monitor on Linux. - GitHub - kbumsik/VirtScreen: Make your iPad/tablet/computer into a secondary monitor on Linux.
This program will let you use two screens on two different computers as if they were connected to the same computer. It even works between different operating systems.
This program will let you use two screens on two different computers as if they were connected to the same computer.
United States
MirrorHall creates virtual second monitors over the network using UDP video streaming among Linux desktop or mobile devices. It is optimized for low latency, and is based on gstreamer and GNOME's mutter screen sharing APIs.
A high-performance, low-latency drawing tablet solution that turns your Android device into a professional graphics tablet for Linux (Wayland).
South Africa
BetterCast lets you use your old device (Mac, Android, iPhone) as real extended displays with zero subscriptions, zero cloud, and native macOS performance.
Philippines
