Gammaray is open source ans has been created by Volker Krause, a prominent figure of the KDE community (a Linux Desktop Environment project). It's documented a

Gammaray is open source ans has been created by Volker Krause, a prominent figure of the KDE community (a Linux Desktop Environment project). It's documented as part of the official qt documentation https://doc.qt.io/GammaRay/ https://doc.qt.io/GammaRay/ and is part of the commercial Qt for Automotive Suite.