Cost / License
- Free
- Proprietary
Application type
Platforms
- Windows
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 Side Screen, which is both free and Open Source. Other great apps like Spacedesk are Deskreen, Multiplicity, Weylus and Duet Display.
ZoneScreen is able to mirror local desktop to another computer in the network. The main difference is that it also allows extend desktop, not only mirror it. Also, you could use ZoneScreen for Windows Mobile to extend/mirror your desktop to screen of your handheld.

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.


GlideX is a cross-device screen-sharing solution. Using wired or wireless connections, you can create a bigger and better work or play space. GlideX optimizes your workflow in the blink of an eye!



Turn any Mac you already own — even an old iMac — into a true extended second display for your Mac. No dongle, no subscription, no account, no cloud.




A high-performance, low-latency drawing tablet solution that turns your Android device into a professional graphics tablet for Linux (Wayland).


BetterCast lets you use your old device (Mac, Android, iPhone) as real extended displays with zero subscriptions, zero cloud, and native macOS performance.


