Flowstats
FlowStats is a Netflow collector. It currently understands and parses Netflow version 1 and version 5 packets. Simply configure your router to export NetFlow and start the app up and it will tell you what's flowing through the router now. It is intended for use by network administrators that need quick access to exported Netflow information while troubleshooting. It can help pinpoint troublesome hosts as well as help with capacity planning. Tables of information displayed include Top Talkers, Top Receivers and the Latest 1000 flows as seen by the router.
NOTE: FlowStats version 1.0 does not support Netflow version 9.
*** This application supports Netflow only, which is generally only supported by Cisco routers and switches. It will not work with SOHO-type routers like Linksys, D-Link, Airport, etc.
Please read the information displayed when pressing the Help button on the toolbar to configure your routers to export Netflow information.