Spacedesk

Name: Spacedesk
Rating: 4.4 (16 reviews)

108 likes

Utilize Spacedesk to transform any network-connected device, from Android tablets to iOS devices, into additional monitors. Requires a Windows primary machine for efficient screen sharing, perfect for office or remote collaboration.

License model

Freemium • Proprietary

Application types

Country of Origin

United States

Platforms

Windows
Windows Mobile
Android
iPhone
Android Tablet
Windows Phone
iPad
Kindle Fire

Spacedesk alternatives

★

4.4 / 5 Avg rating (16)

108likes

15comments

26alternatives

0news articles

Features

Suggest and vote on features

Screen Mirroring
Support for Multiple Monitors
Screen Extension
Desktop Sharing
Video Wall
Screen Sharing
No registration required
Ad-free
Digital Signage

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Sitric liked Spacedesk
18 days ago
Davi-Jorge reviewed Spacedesk
★
★
★
★
★
about 1 month ago
Perfect ! Finally one software witch works to see the desktop of my PC even on a TV BOX of 512 MB the RAM !!!
hekop A comment was removed from Spacedesk
about 1 month ago
Davi-Jorge liked Spacedesk
about 1 month ago
POX added Spacedesk as alternative to GlideX
about 2 months ago
khazbury and Ro1xx1 liked Spacedesk
about 2 months ago
alexcoere liked Spacedesk
6 months ago

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Duet Display

Transform your iOS or Android device into a second screen for your PC or Mac without Wi-Fi. Use touch, gestures, and even a touch bar on iPad.

Learn More

Comments and Reviews

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Comment summary: Spacedesk is praised for its ability to transform older PCs and devices into additional monitors with minimal lag, even on older hardware with average network setups. Users appreciate its reliability as a free alternative for extending displays without hassle. However, some note that higher resolutions may introduce lag unless connected via HDMI. The lack of Linux support and occasional network high usage are downsides. In comparisons, it often outperforms other solutions like Miracast.

Top Positive Comment

cadiped

★

Jul 20, 2017

SpaceDesk is THE single best remote display (not RPD) app/server combo I have found, and I have tried ALOT... on my lan at home, using SpaceDesk, I was able to connect my crappy android (wifi) and a SECOND win10 machine (wired) to my primary win10 machine which already has two displays with ZERO lag, AND at max quality... my personal hardware is all old (core 2 duo's both), and the gfx cards rate VERY low also, plus my lan is still 10/100. THIS should tell you, everything you need to know about this software if you know anything about computers. if not, let me put it like this: every other app/server combo I have tried with JUST my primary and android, has TONS of lag, and were not very stable, SpaceDesk is neither. VERY smooth, VERY stable. tho, I was unable to find a keyboard, it does allow you to take control from any device connected thru it... (touch screen for mouse via android, and even the secondary machines mouse and keyboard!) I RARELY pay for software, and there are EXTREMELY few I say this about, but I would MOST def pay over $50 USD for it!

Davi-Jorge

★

May 28, 2025

Perfect ! Finally one software witch works to see the desktop of my PC even on a TV BOX of 512 MB the RAM !!!

JiaChen ZENG

★

Aug 14, 2021

EditedAug 14, 2021

I compared Spacedesk with Windows built-in Miracast. Overall, it works better unless you use a 4K screen.

Pro

Flexible control of image quality: I can manually adjust image quality to fit in the bandwidth or keep the best quality. I can use the highest setting with a 900p screen on my 1Gb Ethernet. (It will sometimes freeze like what I write in the con below, though.) Miracast doesn't provide any settings.
Responsive input: Input from viewer PC almost can't feel any lag in Ethernet mode. It will be a little laggy if you move the mouse from the viewer's PC when the mouse pointer is on the viewer screen because of image transfer delay. While Miracast's input from the viewer PC is very laggy and when the difference in the screen resolution is large, mouse movement will be jumpy.
WIFI isn't a must: Miracast need WIFI to initiate the connection even in Ethernet mode.

Con

Not optimized enough for screens with large resolution( or networks with low bandwidth): When I connected to my laptop with a 4K screen, everything was a lot worse than Miracast. I even bought a 1Gb network switch hoping it works better than Miracast but didn't. With a reasonable image quality, it couldn't achieve a smooth experience and would periodically freeze like 0.5 seconds. On the contrary, image responsiveness in Miracast is instant when gaming mode is selected (which IMH should always be selected) no matter what resolution is used. There is literally no lag. However, the overall smoothness or frame rate is lower. And Miracast performs surprisingly well in 4K. I feel the image quality is near 90/100 if in Spacedesk, with only a constant 3MB/s network traffic. While Spacedesk can take a range from 10MB/s to 40MB/s but performs worse.
Doesn't support multi-touch: Neither does Miracast, though.

Anirudha Praveen

★

Jul 26, 2021

Its a great way to re purpose an old ipad/tablet and this app is the only one thats free and works relibly.

really wish linux was supported though

kucing

★

Feb 10, 2021

If you have additional tablet/ipad or laptop lying around, you can use them for additional screen. It's really sluggish though on the browser. I really wish they have Linux client, I'd paid for it.

Norl

★

Sep 21, 2020

So far this is the only application that allows you to wirelessly (or not) extend your monitor display on to another computer or laptop. Very simple setup, and Very good instructions on its website. The flaw is it has lags and the image quality is not too good (Unless you have a very good performance computer). It is not gonna be as good as you connect your display via HDMI or VGA cable.

Dawid Gybej

★

Jun 23, 2020

BEST SOLUTION SO FAR!!!
Just click a button and the work is done! Managed to screen-share from an old computer!
Tbh I'm cùmming

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What is Spacedesk?

The multi-monitor display extension app, spacedesk lets you use other devices and computers on your LAN (Local Area Network) as monitors for your Windows desktop. At least 2 machines are needed to operate spacedesk. These machines are connected via a network and running two different software programs:

The Primary Machine is a Windows PC, laptop or Surface Pro tablet. It runs the spacedesk DRIVER software. It includes network display server software and display device drivers. This allows to extend or duplicate the Windows Desktop to the screen of another machine over the network.
The Secondary Machine runs spacedesk VIEWER program which acts as the secondary display. It can be one (or multiple) of the following: - Android tablet or phone (Android VIEWER) - Windows PC, laptop or Surface Pro tablet (Windows Desktop application) - Apple Mac, iPad or iPhone (iOS VIEWER) - Linux PC and a variety of other machines (HTML5 VIEWER)