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Barrier 2.4.0, released by the Debauchee Open Source Group, is an open-source KVM (keyboard, video, mouse) utility that lets one set of input peripherals control several Windows, macOS, or Linux computers sitting side-by-side on the same local network. After installation on each machine, the chosen host shares its mouse and keyboard through an encrypted link; moving the cursor past the edge of one screen instantly transfers control to the adjacent computer while audio, clipboard, and drag-and-drop data follow automatically. Typical deployments involve developers who keep a laptop beside a desktop for cross-platform builds, designers who run a Windows workstation next to a Mac rendering node, and home-office users who want to operate a gaming PC and a productivity laptop from a single keyboard and trackball. Because traffic is confined to the LAN and can be protected by TLS, the tool suits security-minded labs and open-plan offices alike. The project has published three major versions since 2018, with 2.4.0 refining SSL handshake speed and adding support for horizontal scroll and configurable hotkeys. Configuration is handled through a lightweight GUI or a plain-text file that records screen geometry, aliases, and key mappings, so setups ranging from two side-by-side monitors to a four-machine grid can be reproduced in seconds. As an open-source alternative to commercial KVM switches, Barrier sits in the System Utilities / Input Devices category and remains actively maintained on GitHub. The software is available for free on get.nero.com, with downloads provided via trusted Windows package sources (e.g. winget), always delivering the latest version, and supporting batch installation of multiple applications.
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