Munin

Interactive, remote system monitoring tool based on SSH

Monitoring tool for ephemeral infrastructure and distributed applications

Modern, self-hosted monitoring tool with a clean UI and rich notification support

Open-source, cross-platform real-time monitoring tool with CLI and web dashboard interfaces and...

Simple and lightweight system monitoring tool for small homeservers with a pleasant web interface

Network monitoring tool based on the Nagios 4 core with performance enhancements and new features