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PresenceLight, developed by Isaac Levin, is an open-source utility that syncs Microsoft Teams, Skype for Business, or custom presence states to popular smart-bulb ecosystems such as Philips Hue, LIFX, Yeelight, and others, turning physical lights into real-time status beacons for home-office or shared workspace visibility. By polling the Microsoft Graph presence API, the application translates “Available,” “Busy,” “In a call,” or custom messages into color-coded light signals, allowing colleagues or family members to see at a glance whether a user is interruptible. Typical use cases include home-office doorways where a red glow indicates a video meeting, open-plan desks whose lamps mirror headset status, and children’s rooms that flash softly when a parent finishes a call. The lightweight .NET 6-based agent runs on Windows, macOS, or Linux, can be installed as a background service or desktop tray app, and exposes a local web dashboard for selecting bulbs, defining color rules, scheduling automatic dimming, and rotating through themes. Version 5.9.2, the thirty-fifth public release since the project began, adds adaptive brightness curves, support for RGBIC strips, and an improved OAuth cache that reduces Graph throttling on enterprise tenants. Earlier milestones introduced Docker containers, OpenRGB motherboard integration, and a headless mode for Raspberry Pi gateways, giving IT departments flexibility to deploy fleet-wide status lights without user interaction. PresenceLight sits in the System Utilities / Office Productivity category and is frequently paired with conference-room controllers, hot-desking scripts, and ergonomic lighting automation. 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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