An open source network monitoring tool with integrated network mapping.
An open source network monitor project written in C++.
Centreon is an open source network monitor build upon the Nagios software engine.
OP5 is an open source network monitor built upon the Nagios core software.
ZABBIX is an enterprise-class open source distributed monitoring solution.
SNMPSTAT is network-monitoring system, designed to monitor standard network routers, switches and firewalls using SNMP
Multi Router Traffic Grapher (MRTG) is a tool to monitor SNMP variables.
Big Sister monitors systems, tracks current status and status change history, and triggers alarms.
Spong is a simple systems and network monitoring package.
NodeWatch is a network monitoring polling tool. It logs connectivity changes and performs user defined commands.
CRICKET is widely used to produce graphs of collected data. It consists of two components, a collector and a grapher. Collected data is held in a structure using RRDTool and displayed using a web-based interface.
Autostatus is a network and server monitoring program designed to support large complex networks.
The Angel Network Monitor is a relatively simple performance monitoring tool. Angel is able to check TCP connections, disk space, system loading and Ping round trip times. Angel is extensible via Perl scripts.
A GPL based full featured network management application for the GNOME environment.
HotSaNIC (Html overview to System and Network Information Center) consists of a set of perl-scripts built on Tobias Oetiker’s rrdtool to generate graphical system-statistics.
NMIS started as a SNMP polling and statistics viewer front-end to Tobi Oetiker’s RRDTool. RRDTool replaces MRTG but doesn’t include a front end and backend to handle SNMP polling and display resulting web pages etc.
NRG is a system for maintaining and visualizing network data and other resource utilization data.
Torrus is designed to be the universal data series processing framework. Its scalable hierarchical design, application-independent core, and highly customizable architecture make Torrus an attractive choice both for small installations and for big enterprise or carrier networks.
SmokePing measures latency, latency distribution, and packet loss in your network.
RTG is a flexible, scalable, high-performance SNMP statistics monitoring system.
Percival is a Network Monitoring and Capacity Planning front-end to the excellent RRDtool software.
Cacti is a complete frontend to rrdtool, it stores all of the nessesary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven.