[ripdog]

Qt isn't just a GUI toolkit - it's an everything toolkit. It's somewhat intended to be used (potentially) alone with C++ to allow the creation of a wide variety of apps. It includes modules like Bluetooth, Network, Multimedia, OAuth, Threading and XML.

See a full list: https://doc.qt.io/qt-6/index.html

[pjmlp]

In the spirit of the C++ compiler frameworks that were quite common during the 1990's before C++98, and then we got quite a thin standard library instead, and a mess of how to manage third parties that is still being sorted out.