Marcus Klein

Marcus has covered software licensing, operating systems, and enterprise productivity tools for over a decade. Before joining VendKeys.com's editorial team, he wrote for several tech publications focused on Windows, Linux, and the broader software industry.

His coverage focuses on the practical side of software ownership — what licenses actually mean, how OEM differs from retail in the real world, when volume keys make sense, and how the discount software market evolved from a fringe phenomenon to a multi-billion-dollar segment recognized by EU courts and major resellers.

Marcus is based in Berlin and contributes guides on Windows, Microsoft Office, JetBrains, antivirus, and licensing fundamentals.