netdata

netdata is a web-based, real-time performance monitoring system which visualizes the system resource usage of a local Linux server (which netdata is running on) via time-series statistics. Monitored system properties include CPU usage (core […]

 

Bro

Bro is an open-source network monitoring and intrusion detection system written in C++. Bro collects live packets via the libpcap interface, analyzes packet contents, generates events from the analysis, and performs various actions based […]

 

Monit

Monit is an open-source server monitoring and watchdog system for Linux and Unix. It allows system admins to custom-define various error conditions on server resources, such as missing processes, unexpected filesystem changes, memory/disk deficit […]

 

Cachet

Cachet is an open-source status page system written in PHP and powered by a web server (Node.js, Apache and Nginx). It allows system admins to post incident reports, status updates, and scheduled maintenance via […]

 

Cacti

Cacti is an open-source network monitoring and visualization tool offering web-based interface. Cacti can be configured with poll-based simple network management protocol (SNMP) to collect time-series statistics on servers, switches or routers, and to […]