Privacy & Security Features
Instantly see who or what your PC is talking to using graphs, plus see what your PC may have connected to in the past.
Detect spyware, malware, badly behaving apps, and bandwidth hogs, then block their connections.
It warns you of network related changes to your PC, or unusual changes to your apps that could indicate malware.
Monitor other PCs on your network and get alerted when new unknown devices join your WiFi.
Network Data Usage Monitoring
Keep track of your data usage on your PC or mobile phone and get alerted before going over data limits.
Go back in time with to see what your PC was doing while you were away.
Get alerted every time a new app accesses the network, and block it if necessary.
See detailed network usage statistics broken down by IP/Host, app, network traffic types, and more.
It must be portable, meaning that it can run without the need to install it in any Linux OS. It is most preferable to be in the AppImage format, which means 1 file = 1 app, and it must be portable.
It must be in GUI format and must be able to detect any Linux apps trying to connect itself to the Internet regardless it is a system app or non-system app.
Most importantly, it must be portable. Would be great if it is gratis!