NFDUMP tools support netflow v5, v7 and v9 capturing and processing.

nfcapd - netflow capture daemon.
Reads the netflow data from the network and stores the data into files.

nfdump - netflow dump.
Reads the netflow data from the files stored by nfcapd. It's syntax is similar
to tcpdump. If you like tcpdump you will like nfdump.

nfprofile - netflow profiler.
Reads the netflow data from the files stored by nfcapd. Filters the netflow
data according to the specified filter sets (profiles) and stores the
filtered data into files for later use.

nfreplay - netflow replay.
Reads the netflow data from the files stored by nfcapd and sends it over
the network to another host.

ft2nfdump - flow-tools to nfdump - optional component.

WWW: https://github.com/phaag/nfdump