PRTG Network Monitor is a powerful network monitoring application for Windows-based systems. It is suitable for small, medium, and large networks and capable of LAN, WAN, WLAN and VPN monitoring. You can also monitor real or virtual web, mail, and file servers, Linux systems, Windows clients, routers, and many more. It monitors network availability and bandwidth usage as well as various other network parameters such as quality of service, memory load and CPU usages. It provides system administrators with live readings and periodical usage trends to optimize the efficiency, layout and setup of leased lines, routers, firewalls, servers and other network components.

The software is easy to set up and use and monitors a network using Simple Network Management Protocol (SNMP), Windows Management Instrumentation (WMI), packet sniffer, Cisco NetFlow (and sFlow) as well as many other industry standard protocols. It runs on a Windows-based machine in your network for 24-hours every day. PRTG Network Monitor constantly records the network usage parameters and the availability of network systems. The recorded data is stored in an internal database for later analysis.