Important: Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct
The well-known network analysis tool "wireshark":https://www.wireshark.org/ will be switching to Qt (from GTK+).
The "blog post announcing this decision":https://blog.wireshark.org/2013/10/switching-to-qt/ contains a good analysis of the costs and benefits involved in such a huge undertaking.
Good news and interesting article !
Next step: a plugin for Creator to help debug QNetwork based application :)