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Virtual Radar Server 2.4.4, developed by Andrew Whewell, is an open-source .NET utility that turns a Windows machine into a local aircraft-tracking hub. By running a lightweight web server on the host PC, the program listens to data streams from common Mode-S or ADS-B receivers—such as RTL-SDR dongles, Kinetic SBS boxes, or AirNav Radar—and renders the live traffic as moving icons on an embedded Google or OpenStreetMap interface. Any modern browser on the same network can connect to the built-in address, so enthusiasts, spotters, small airports, and ATC training schools can watch callsigns, altitudes, speeds, headings, and decoded squawks update in real time without installing extra client software. Because the map tiles, aircraft silhouettes, and operator flags are cached locally, the server continues to display traffic even when the Internet is limited, while optional plugins let users record flight trails, upload data to aggregator sites, or expose JSON endpoints for home-automation dashboards. The single-version lineage (currently 2.4.4) keeps the codebase stable, yet the GPLv2 license encourages community improvements and transparent security audits. Typical deployments range from a laptop on a bedroom windowsill feeding a rooftop antenna to a rugged mini-PC atop a control tower, giving hobbyists, journalists, and security teams an inexpensive way to monitor nearby airspace, archive historical tracks, or demonstrate radio decoding concepts in classroom settings. Virtual Radar Server is available for free on get.nero.com, with downloads provided via trusted Windows package sources such as winget, always delivering the latest version, and supporting batch installation of multiple applications.
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