PRTG Traffic Grapher is an easy to use Windows based software that monitors bandwidth usage and other network parameters via SNMP. PRTG Traffic Grapher monitors network and bandwidth usage as well as various other network parameters like memory and CPU usages, providing system administrators with live readings and periodical usage trends to optimize the efficiency, layout and setup of leased lines, routers, firewalls, servers and other Simple Network Management Protocol (SNMP) enabled network components. PRTG Traffic Grapher runs on a Windows machine in your network for 24 hours every day and constantly records the network usage parameters. The recorded data is stored in an internal database for later reference. Viewing the monitoring statistics and configuration is done using the Windows GUI. For remote access to the monitoring results PRTG Traffic Grapher comes with a Web Interface and a built in web server to provide access to graphs and tables using a web browser. The application works with most network devices that support SNMP. It was tested with various routers and switches from companies like Cisco, HP, 3Com, Linksys, DLink, as well as with various other SNMP enabled devices (e.g. computers running Windows or network printers). PRTG Traffic Grapher runs on Windows 98/ME/2000/XP/2003. For easy monitoring of system parameters on machines running Windows 2000/XP/2003 the software ?Paessler SNMP Helper? is included for free. PRTG Traffic Grapher is available in both a Freeware Edition (limited to monitoring one network device and suitable for home users and SOHOs) and several Commercial Editions offering monitoring for multiple network devices and advanced features suitable for corporate use.