Barrier
Barrier is an open-source software KVM (keyboard, video, mouse) switch that allows users to control multiple computers from a single keyboard and mouse across different operating systems. It works by sharing the input devices over a network connection, eliminating the need for physical hardware switches. This tool is particularly useful for developers and IT professionals who work with multiple machines simultaneously.
Developers should learn Barrier when they need to efficiently manage multiple computers (e.g., a Windows PC, a Linux server, and a Mac) from one workstation, reducing clutter and improving productivity in multi-machine setups. It is ideal for cross-platform development, testing environments, or home labs where physical KVM switches are impractical or costly.