Alternatives to Barrier for all platforms with any license

Synergy

Share one mouse, one keyboard, and one clipboard between multiple Windows, Mac, and Linux computers.

Commercial $ $ $ Open Source Mac Windows Linux
Mouse Sharing Keyboard Sharing Share Clipboard Keyboard Sharing ... Mouse Sharing Two-way sharing Add a feature

302 Like
Mouse without Borders

Mouse w/o Borders makes you the captain of your computer fleet by allowing you to control up to 4 computers from a single mouse and keyboard.

Free Windows
Mouse Sharing Keyboard Sharing Support for Multiple Monitors Share Clipboard ... Drag n drop Media button support Mouse Sharing Add a feature

99 Like
spacedesk

spacedesk expands the Windows desktop computer screen to other computers over the local area network.

Free Windows Windows Mobile Android
Screen Mirroring Add a feature

49 Like
ShareMouse

Mouse and Keyboard Sharing to control a Windows or Mac PC with the mouse and keyboard of any other PC.

Commercial Mac Windows
Share Clipboard Sync with Fantastical Keyboard Sharing Mouse Sharing ... Portable Add a feature

79 Like
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

66 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

8 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 Virtualization Add a feature

10 Like
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
Mouse Sharing Add a feature

3 Like
across

Across makes a Bluetooth equipped PC or Mac work as a standard Bluetooth keyboard/mouse combo.

Commercial Mac Windows Android
Adding more brushes Keyboard Sharing Mouse Sharing Photographic filters 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
Mouse Broadcaster

Mouse Broadcaster is used to duplicate mouse and keyboard actions to multiple PCs on a network. Mouse Broadcaster comes in two parts - Master and Minion. The master...

Free Windows
Mouse Sharing Add a feature

1 Like