PRTG Network Monitor runs on a Windows machine within your network, collecting various statistics from the machines, software, and devices which you designate. (It can also autodiscover them, helping you map out your network.) It also retains the data so you can see historical performance, helping you react to changes.
PRTG comes with an easy-to-use web interface with point-and-click configuration. You can easily share data from it with non-technical colleagues and customers, including via live graphs and custom reports. This will let you plan for network expansion, see what applications are using most of your connection, and make sure that no one is hogging the entire network just to torrent videos.
PRTG can collect data for almost anything of interest on your network. It supports multiple protocols for collecting data
- PRTG Network Monitor » All-in-one network monitoring software
- Paessler PRTG - Wikipedia
- Download PRTG - Free Network Monitor - MajorGeeks