Nagios is a host/service/network monitoring program written in C and released under the GNU General Public...

Cacti is a complete network graphing solution designed to harness the power of RRDTool's data storage and g...

Zabbix is a mature and effortless enterprise-class open source monitoring solution for network monitoring a...

It is the most powerful and trusted network monitoring software on the market. It extends on proven, enterp...