Before concluding, it would be incomplete not to mention , the Electron.js and WebRTC-based application that has become the most popular true Linux alternative to spacedesk. Deskreen turns any device with a web browser into a secondary screen using only Wi-Fi, requiring no software installation on the client. It supports full-screen or single-window sharing, end-to-end encryption, offline operation, and even a teleprompter mode that flips the screen image horizontally.
If you have a virtual display adapter plugged in, select the second screen layout to extend your desktop. If you just want to monitor an app, select the specific window. The Wayland vs. X11 Problem (A Quick Warning) spacedesk para linux new
Weylus turns your tablet or phone into a duplicate screen, specifically optimized for stylus input. Before concluding, it would be incomplete not to
Summary verdict
Spacedesk for Linux: How to Turn Your Linux Machine into a Second Screen (and Best Alternatives) If you have a virtual display adapter plugged
| Software | Type | Key Feature | Best For | | :--- | :--- | :--- | :--- | | | Open-Source | Streams to any web browser; no client needed | Users wanting the simplest possible setup | | x2vnc | Open-Source | Uses a VNC variant to create a virtual second monitor | Users already comfortable with VNC technology | | Sunshine + Moonlight | Open-Source | Ultra-low latency game streaming protocol repurposed for desktop | Power users needing high-performance display extension | | TethrLink | Open-Source (Snap) | Wired USB connection for rock-solid stability | Users with a consistent USB connection and Snap support | | RustDesk | Open-Source | Full-featured remote desktop with second-screen capabilities | Those who want a complete remote desktop solution | | Scrcpy (with virtual display) | Open-Source | Turns your Linux PC into a secondary display for your Android phone | Users who want to control their Android phone from their Linux PC |
According to the latest information from the Spacedesk support forum as of 2026, the official —which allows a PC to broadcast its screen—is primarily designed for Windows.