Software Finder

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Input Director
WindowsAlternatives

Controls multiple Windows systems using the mouse and keyboard attached to one computer.

 share-input-devices, keyboard-control, mouse-control    System Tools & Info, Keyboard and Mouse Control    Free (Private/Educational use)
Editor Rating:
4
KDE Connect
Android, Linux

A great tool to connect Android and Linux devices for sharing content wirelessly.

 share-clipboard, file-transfer, remote-access, remote-control, wireless-access    File Copy, Remote Access, Keyboard and Mouse Control, Remote Control    Free
Editor Rating:
4
Synergy
Linux, Mac OS, WindowsAlternatives

Share one mouse and keyboard between multiple computers and it works across multiple platforms.

 share-input-devices, keyboard-control, mouse-control    System Tools & Info, Keyboard and Mouse Control    Free (Last free version)
Editor Rating:
3.5