The best open source alternative to Paessler PRTG Network Monitor is Zabbix. If that doesn't suit you, our users have ranked more than 100 alternatives to Paessler PRTG Network Monitor and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Paessler PRTG Network Monitor are Sniffnet, Nagios, LibreNMS and Tracebar.
Gather and analyze accurate statistics and performance metrics, visualize it, get notified about current and potential issues without delay, and take advantage of our time-tested professional development and support.
Sniffnet is a network monitoring tool to help you easily keep track of your Internet traffic.
Nagios is a powerful monitoring system licensed under Nagios Enterprises that helps organizations identify and resolve IT infrastructure issues.
LibreNMS is an autodiscovering PHP/MySQL based network monitoring system forked from Observium. LibreNMS aims to be easy to use, painless to deploy, and support monitoring of a wide range of devices. Observium's license changed to a modified QPL license in May 2012, and...
TraceBar puts a live traceroute in your macOS menubar. It continuously monitors the network path to any host, showing every hop’s latency, packet loss, and route changes in real time.
Enterprise-ready monitoring solution that provides unparalleled flexibility for IT to address both immediate and unforeseen operational issues, including infrastructure and IT processes.
Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play. A default installation provides a lot of graphs with almost no work.
OpenNMS is an open-source network monitoring platform that helps you visualize and monitor everything on your local and distributed networks.
NAV (Network Administration Visualized) is a free software program to monitor networks, developed by UNINETT and used by universities and corporations around the world.
Unify your cloud-native monitoring with zero-code eBPF, advanced profiling, and 10x storage efficiency.
Easy to use configuration web interface for nagios and neamon. openITCOCKPIT is a perfomant monitoring system with support for distributed monitoring (Satellites), REST API, nice dashboards, maps, graphs and a modular concept for easy customization.
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Both offer network monitoring and alerting