Compare software

nfdump vs YAF: catalog facts
nfdump	YAF
Free Free and open source under a BSD license.	Free Free and open source under the GPL-2.0-only license.
Linux, Self-hosted, Command line	Linux, Command line
Supports NetFlow, IPFIX and sFlow Filtering and aggregation of stored flow records	Processes live traffic and PCAP files Exports flow records in IPFIX format
Command-line only, with no built-in graphical interface Needs network devices configured to export flow data	YAF is the data collection component of the CERT NetSA Security Suite; downstream tools process its flow data.
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: BSD	License: GPL-2.0-only
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 8, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.