Alternatives to spacedesk for Windows with any license

Input Director

Input Director is a Windows application that lets you control multiple Windows systems using the keyboard/mouse attached to one computer. It is designed for folks who...

Free Personal Windows
Create Macro Gaming-focused Keyboard Sharing Mouse Sharing ... Share your screen Add a feature

69 Like
Duet Display

Utility that turns your iOS or Android device into a second screen for your PC or Mac.

Commercial Mac Windows iPhone iPad
Support for Multiple Monitors Screen Mirroring Tablet Pressure Sensitivity Add a feature

43 Like
iDisplay

Turn your iPad/iPhone or Android tablet or smartphone into a convenient side monitor for your Windows or Mac desktop. iDisplay is a universal app specially optimized for...

Commercial Mac Windows Android iPhone Android Tablet ... iPad
Desktop Sharing Multiple desktops Support for Multiple Monitors Screen Mirroring ... Share your screen Second monitor support USB tether Add a feature

36 Like
Multiplicity

Multiplicity enables a user to control multiple computers with one keyboard and mouse. Multiplicity is installed on networked PCs to create a virtual KVM switch with two...

Commercial Windows
Keyboard Sharing Share Clipboard Mouse Sharing Support for Multiple Monitors ... Remote desktop Remote Support Virtual KVM Switch Virtualization Add a feature

13 Like
Splashtop Wired XDisplay

Turn your iPad, Android tablet, Kindle or smartphone into a high performance extra monitor for your computer

Commercial $ $ $ Mac Windows Android iPhone iPad
Screen Extension Support for Multiple Monitors Screen Mirroring Second monitor support Add a feature

4 Like
x2vnc (win2vnc)

This program will let you use two screens on two different computers as if they were connected to the same computer. The program will open a small (one pixel wide)...
- Discontinued
  The project is no longer developed but the program is still downloadable and working
Free Open Source Windows Linux
Support for Multiple Monitors VNC Viewer Add a feature

7 Like
ZoneScreen

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...
- Discontinued
  Main web reads "[...] new feature to be implemented, it is very unlikely for new versions to appear in the nearest future[...] I haven't done any changes to ZoneScreen in years." See https://www.zoneos.com/zonescreen.htm
Free Personal Windows Windows Mobile
Desktop Sharing Share your screen Add a feature

10 Like
TwomonUSB

Smart devices become monitors by connecting them to a PC via USB! The Convenient Connect TwomonUSB Tablet and computer can be used as a dual monitor easily by...

Commercial $ $ $ Mac Windows Android iPhone iPad
Screen Extension Add a feature

3 Like
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Win2VNC

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.
- Discontinued
  Last Update: 2015-09-23, see https://sourceforge.net/projects/win2vnc/
Free Open Source Windows
Screen Extension Mouse Sharing Add a feature

3 Like
ShareKM

Control your Droid from your desktop with MOUSE and KEYBOARD. ShareKM is a very handy tool for Android that lets you share your computer's Mouse, Keyboard and...
- Discontinued
  links are dead
Free Windows Android
Support for Android Things Keyboard Sharing MultiTouch Share your screen Add a feature

4 Like