Amateur radio logbook app
As I already pointed out in my another ticket, there is a surprisingly big amount of amateur radio operators and radio listening enthusiasts among Linux and GNOME users. When amateur radio operators make a contact (or radio listening enthusiasts hear an interesting contact), they write it down to their "logbook". Such logbook can be in a paper form or, more likely nowadays, can be a software app.
On Windows and macOS platforms, there are many advanced logbook apps available. For example this one. On Linux, there is this one, but it is probably the best logbook app we have. It would be great if there was an amateur radio logbook app with a good looking GUI that ideally adheres to the GNOME Human Interface Guidelines available for Linux.