spectraNET

spectraNET shows which applications use the network, how much, with whom,
and whether it looks suspicious. Every connection of every program is
measured on your computer and drawn as an animated 2.5D city: each app is a
building, the traffic flows along the streets, and a click on anything
explains in plain language what it is and what it is doing.

- Live upload and download per application, with the destinations it talks
to and their names
- What kind of traffic it is: video, calls, downloads, updates, radio and
satellite services
- "Is my network slow?": measures your router and the internet, and tells
you whether the problem is the network or an app
- Hourly and daily history of every application
- Alerts from public threat-intelligence lists; pause, end or block an app
or an address, with confirmation
- Everything is measured locally: nothing is decrypted or uploaded
- The snet command line (spectranet.snet) and the snetd service, which
keeps measuring while the app is closed (settings: sudo spectranet.snetd
config set KEY=VALUE)

The service measures with eBPF and needs these interfaces, connected once:

sudo snap connect spectranet:system-trace
sudo snap connect spectranet:system-observe
sudo snap connect spectranet:network-observe
sudo snap connect spectranet:network-control
sudo snap connect spectranet:process-control
sudo snap restart spectranet.daemon

Members of the sudo (or wheel) group can read it.