ManageEngine OpManager

OpManager supports monitoring using Syslog, SNMP, SNMP Traps, Cisco IP SLA, NetFlow, sFlow, IP-FIX, NBAR, CBQoS, TFTP/ SCP (for Network Configuration Management), WMI, Event Log (for Windows Servers) and Telnet/ SSH (for UNIX platform devices). It is a commercial network monitoring and management software (a free version also exists for monitoring 10 devices), which can be customized with specific add-ons and plug-ins.