ntopng  2.4
About: ntopng - high-speed web-based network traffic analysis and flow collection (next generation version of the original "ntop"; community edition).
  Fossies Dox: ntopng-2.4.tar.gz  ("inofficial" and yet experimental doxygen-generated source code documentation)  

ntopng documentation

ntopng is the next generation version of the original ntop, a network traffic probe that shows the network usage, similar to what the popular top Unix command does. ntopng is based on libpcap and it has been written in a portable way in order to virtually run on every Unix platform, MacOSX and on Win32 as well.

For more information please visit the ntop web site.