AsItHappens Network Statistic Collector
AsItHappens is a real-time network statistic collector and grapher. It collects data from devices over a network and displays them on a graph, optionally storing collected data in a database for later retrieval. Current collection types include network response, bandwidth, processor usage, memory usage, Cisco NBAR, Cisco NetFlow and arbitrary SNMP OID. AsItHappens polls data in regular intervals, which can be in the order of milliseconds, to give immediate feedback on network performance. In addition, AsItHappens can graphically display flow information from a packet capture file.
AsItHappens is free software released under the GNU General Public License (GPL).