Flowalyzer is a free NetFlow and sFlow listener Tool Kit for testing hardware or program for sending and receiving NetFlow and sFlow data.
Flowalyzer can help IT experts troubleshoot hardware from vendors like Cisco and Enterasys, as well as NetFlow collector software, ensuring that whichever flow technology they use is configured properly on both ends.
Flowalyzer NetFlow & sFlow Listener
* Determine which flow sending devices are sending the highest volume.
* Listen for NetFlow on multiple ports.
* Display packet count, version of NetFlow and UDP port flows are coming in on.
* Display the IP address and DNS name.
Also, includes the Flowalyzer NetFlow & sFlow Generator, Flowalyzer NetFlow & sFlow Configurator and the Flowalyzer NetFlow & sFlow Communicator.

The license of this software is Freeware, you can free download and free use this network utility software.