On NetEye we are using NfSen for the collection, analysis and view of NetFlow data.
Unfortunately, many users complain, that the NfSen tool is not that simple to use, especially in terms of fast data analysis and for the reporting of the analysis results to their responsibles.
NfSen is able to provide many possibilities to analyze NetFlow data, but if you need an easy standard view for the most important data flow scenarios, it is maybe better to use Kibana4 for visualizing this data.
Kibana4 is integrated to NetEye 3.6. Thanks to the use of Logstash and Elasticsearch it is possible to gather the NetFlow data for creating clear Kibana4 dashboards.
On the following four images you can see four visualization examples for NetFlow data on Kibana4. Obviously, you can easily filter this information for a time period, which can be individually selected from the GUI.