KVM Switch with Serial Port Control, 4K@60Hz 4 in 1 Out HDMI KVM Switcher Box for Share Mouse Keyboard and Monitor, Can Work with Pi-kvm, Compatible with Windows/Linux/Mac System - Newegg.com
Synergy: Share Your Keyboard-Mouse with Multiple Mac, Windows or Linux Computers
Control Multiple Computers with One Keyboard, Mouse Using Synergy - TechSupport
Share Mouse and Keyboard With Your windows & linux machines With Synergy 1.7.1
Amazon.com: KVM Switch with Serial Port Control, 4K@60Hz 4 in 1 Out HDMI KVM Switcher Box for Share Mouse Keyboard and Monitor, Can Work with Pi-kvm, Compatible with Windows/Linux/Mac System : Electronics
How to share a keyboard and mouse across computers
5 Free KVM Switch Tools to Share Keyboard and Mouse on Multiple Computers • Raymond.CC
Share Keyboard, Mouse - Control Any Laptop/Desktop With Synergy • TechVorm
ShareMouse Alternatives for Linux: Top 4 Mouse and Keyboard Sharing Utilities | AlternativeTo