NetFlow Analyzer is a flow-based bandwidth monitoring and traffic analysis tool that helps you monitor the devices, interfaces, applications, and users in your network. It helps you keep track of the network traffic activity and diagnose and troubleshoot network anomalies and bandwidth hogs in real-time. NetFlow Analyzer supports all major devices and flow types including NetFlow, sFlow, cflow, J-Flow, FNF, IPFIX, NetStream, and Appflow. It collects and analyzes this data to generate detailed reports on network traffic patterns and bandwidth usage trends to offer a holistic view of who or what is using your bandwidth, how much, and when it's being used.
Zabbix - Track, record, alert and visualize performance and availability of IT resources
Progress WhatsUp Gold - Progress WhatsUp Gold is an all-in-one Network monitoring utility that now offers even more features and functionality to help you monitor your servers, network, and IP address.
NetVizura NetFlow Analyzer - NetFlow Analyzer is a solution for bandwidth monitoring and traffic analysis. It helps with traffic investigation, analysis and reporting
Nfsen - NfSen is a graphical web based front end for the nfdump netflow tools that allows you to:
Wireshark - Wireshark is a network protocol analyzer for Unix and Windows. It lets you capture and interactively browse the traffic running on a computer network.
insightIDR - insightIDR is an incident detection and response tool.