A research team led by Microsoft’s Helen Wang recently published a report about an experimental browser prototype called “Gazelle” that uses processes to isolate page content elements originating from different domains. It builds on the concept of multiprocess browsing but uses more fine-grained isolation to expand on the security advantages that are already delivered by existing multiprocess browsing models. But is it an operating system, Microsoft Research’s analogue to Google’s Chrome OS? Not quite.

Wang’s characterization of Gazelle as a “multi-principal operating system” for the Web has been widely misinterpreted by the press. Although Gazelle’s architecture is loosely modeled on the underlying concepts of operating system design, it is not actually an operating system, it’s not intended to replace Windows, and it won’t compete with Chrome OS. It is a browser prototype that runs on Windows Vista, is coded in C#, and has a conventional user interface that is built with .NET’s WinForms framework.

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