Network traffic visibility is the cornerstone of modern IT security and performance management. NetFlow (and its derivatives like IPFIX, sFlow, and J-Flow) provides the data necessary to understand who is talking to whom, when, and how much data is being transferred. While commercial solutions offer robust features, open-source NetFlow collectors provide a flexible, cost-effective alternative for organizations of all sizes.
: Allows users to add almost any field beyond the standard NetFlow set via text configuration files. GitHub +8 Feature Comparison Table Feature Akvorado GoFlow2 nfdump/NfSen Xenoeye Primary Storage ClickHouse N/A (Exporter) Flat Files PostgreSQL/ClickHouse Data Enrichment GeoIP, SNMP Minimal No Customizable Fields Visualization Web UI / Grafana External (Kafka/ELK) Web UI (NfSen) Grafana Main Use Case Large-scale Visibility High-speed Pipeline Historical Forensics DoS/DDoS Detection Specialized Open-Source Integrations 12 sites netsampler/goflow2: High performance sFlow/IPFIX ... - GitHub Dec 27, 2025 — netflow collector open source