Best open-source security data pipeline tools
Open-source security data pipeline tools you can self-host and inspect. A neutral list of the open-source security data pipeline options in our directory, compared on capabilities, deployment, and sources. We do not crown a single winner; tools are listed alphabetically.
Updated June 2026
What this shortlist looks at
Featured
Paid placementSecurity data fabric platform for intelligent routing and optimization of security telemetry
Pricing: Contact for pricing
Realm.Security vs FluentdRealm.Security vs TenzirRealm.Security vs Vector
Tools listed here
Fluentd
Cloud-native teams wanting a lightweight, proven open-source data collector with a massive plugin ecosystemOpen-source unified data collector and log aggregator from the CNCF ecosystem
Open-source unified data collector and log aggregator from the CNCF ecosystem
Tenzir
Security teams wanting an open-source, security-native data pipeline with transparent code and no vendor lock-inOpen-source security data pipeline with native support for security-specific data formats
Open-source security data pipeline with native support for security-specific data formats
Vector
Teams wanting the highest-performance open-source pipeline with Rust-based reliability for high-throughput data routingHigh-performance open-source observability pipeline built in Rust by Datadog
High-performance open-source observability pipeline built in Rust by Datadog
For the full category walkthrough with every tool compared, see the Observability Pipelines guide.