Graphical Network Monitor alternatives

Sensei is a native macOS app for monitoring and optimizing your Mac performance. With a wide range of features spanning hardware and software, it can help you clean out your disk space, optimize your boot speeds, monitor your hardware health, and much more.

Fing Desktop is an advanced network toolkit and scanner with connectivity health checks, speed tests, notifications of connectivity issues and Internet.

NetBeez is a real-time network performance monitoring solution that detects network and application problems before users do. The platform uses small hardware sensors, like the Raspberry Pi, or virtual agents to monitor LAN and WiFi networks. NetBeez enables network administrators to quickly detect, troubleshoot, and repair network problems.