>>105791994
The notification daemon is probably Mako
The widget is Netspeed widget:
https://store.kde.org/p/998895/
https://github.com/dfaust/plasma-applet-netspeed-widget

You don't actually need a fancy widget though. KDE has built-in widgets for bandwidth usage already. You just have to add it.
(I use a panel height of 20 but increased it to 40 for the screenshot)

>>105792624
>I don't work at a money launderer
>I work at a money launderer