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Cybersecurity · head to head

Falco vs Netdata

Falco logo

Falco

Cybersecurity

CNCF-graduated runtime threat detection for Linux and Kubernetes using eBPF

From
Free
Rated
-
Full reviewWebsite
Netdata logo

Netdata

Networking

Per-second metrics collection with automatic dashboards and on-node anomaly detection

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Falco falco detects and alerts but does not block; stopping an attack requires wiring up Falco Talon or your own response tooling, so out of the box a confirmed detection still means a human intervening after the fact.; Netdata the dashboard interface is under a restrictive Netdata licence rather than GPL and is served from Netdata infrastructure by default, so the deployment is not fully self-contained without extra configuration.
  • They diverge on capability: Falco covers eBPF kernel instrumentation, Netdata covers Per-second collection.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Falco and Netdata actually diverge.

Attributes where Falco and Netdata differ
AttributeFalcoNetdata
PlatformsLinux, Kubernetes, Self-hostedLinux, macOS, FreeBSD, Docker, Kubernetes, Windows
CategoryCybersecurityNetworking

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Falco

  • eBPF kernel instrumentation
  • System call rules engine
  • Container and Kubernetes context
  • Default rule set
  • Falcosidekick
  • Falco Talon
  • Plugins framework
  • DaemonSet deployment

Only in Netdata

  • Per-second collection
  • Zero-configuration discovery
  • Edge machine learning
  • Tiered database engine
  • Streaming and replication
  • Health alarms

What people use each for

The jobs each tool is most often brought in to do.

Falco

  • A platform team that needs to know when a shell is opened inside a production container, which image scanning cannot detect because it happens at runtimenot Netdata
  • A regulated business required to evidence host and container intrusion detection on Kubernetes nodes for an auditnot Netdata
  • A security team wanting a vendor-neutral detection layer whose rules they can read and modify rather than a black-box agentnot Netdata
  • A cluster where a compromised dependency might write to sensitive paths or open unexpected outbound connections, and only kernel-level visibility will catch itnot Netdata

Netdata

  • Diagnosing a short-lived performance incident where one-minute averages hide the spike entirelynot Falco
  • Kubernetes clusters where per-series billing from a hosted vendor has become the largest observability costnot Falco
  • Adding dense host visibility to an estate that already has Prometheus for application metricsnot Falco
  • Small teams with no monitoring engineer who need working dashboards on the day of installationnot Falco

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Falco

  • Falco detects and alerts but does not block; stopping an attack requires wiring up Falco Talon or your own response tooling, so out of the box a confirmed detection still means a human intervening after the fact.
  • The default rule set is noisy in real clusters and generates a large volume of benign matches from normal operational activity; without weeks of tuning, alert fatigue sets in and the team stops reading the feed, which is the usual failure mode.
  • There is no storage, console, search or case management in the project, so a working detection capability means also running Falcosidekick, an event store, a dashboard and alert routing, all of which you build, host and maintain.
  • The modern eBPF driver requires kernel 5.8 or later; older hosts fall back to the legacy probe or the kernel module, which brings driver-building against kernel headers and the operational fragility that comes with it on every kernel upgrade.
  • Per-node syscall instrumentation carries measurable CPU overhead on busy hosts, and the cost scales with syscall volume rather than with cluster size, so the noisiest and most performance-sensitive workloads are exactly the ones that feel it most.

Netdata

  • The dashboard interface is under a restrictive Netdata licence rather than GPL and is served from Netdata infrastructure by default, so the deployment is not fully self-contained without extra configuration.
  • Retention is limited by disk on each node unless you build and maintain a parent tier, which makes it a poor archive for year-over-year capacity planning.
  • Per-second collection consumes noticeable CPU and memory on small or heavily loaded nodes, and on constrained edge hardware the monitoring becomes part of the problem.
  • Default alerting is generous and fires on conditions many teams consider normal, so the first weeks involve pruning alarms rather than responding to them.
  • Fleet-level features that make it usable across hundreds of nodes sit in Netdata Cloud, so the free agent alone leaves you visiting individual node dashboards.

Pricing, plan by plan

Falco

Free
  • Falco (open source)Free
    • Apache 2.0 licence, CNCF graduated project
    • eBPF and kernel module drivers
    • Full rules engine and default rule set

Netdata

Free
  • Netdata AgentFree
    • GPLv3 agent with unlimited nodes
    • Per-second metrics and edge anomaly detection
    • Local dashboards and alerting
  • Netdata Cloud paid tiers$undefined/month
    • Per-node subscription for fleet management features
    • Role based access control and longer alert history
    • Business and enterprise support options

Which should you pick?

Choose Falco if

  • You need ebpf kernel instrumentation.
  • You want to start without paying.
  • You work on Linux, Kubernetes, Self-hosted.
  • You also want system call rules engine.
Falco review

Choose Netdata if

  • You need per-second collection.
  • You want to start without paying.
  • You work on Linux, macOS, FreeBSD, Docker, Kubernetes, Windows.
  • You also want zero-configuration discovery.
Netdata review

Questions people ask

Is Falco or Netdata better?
Neither clearly leads. Falco starts at Free and Netdata at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Falco or Netdata?
Falco starts at Free and Netdata at Free.
Does Falco or Netdata run on more platforms?
Falco runs on Linux, Kubernetes, Self-hosted. Netdata runs on Linux, macOS, FreeBSD, Docker, Kubernetes, Windows.
Can I use Falco for free?
Both have a free tier, so you can try either at no cost before committing.
What is Falco best used for?
Falco is most often used for a platform team that needs to know when a shell is opened inside a production container, which image scanning cannot detect because it happens at runtime, a regulated business required to evidence host and container intrusion detection on kubernetes nodes for an audit, a security team wanting a vendor-neutral detection layer whose rules they can read and modify rather than a black-box agent, a cluster where a compromised dependency might write to sensitive paths or open unexpected outbound connections, and only kernel-level visibility will catch it. Of those, a platform team that needs to know when a shell is opened inside a production container, which image scanning cannot detect because it happens at runtime and a regulated business required to evidence host and container intrusion detection on kubernetes nodes for an audit are not what Netdata is typically brought in for.
What can Falco do that Netdata cannot?
Falco covers eBPF kernel instrumentation, System call rules engine, Container and Kubernetes context, Default rule set. Netdata covers Per-second collection, Zero-configuration discovery, Edge machine learning, Tiered database engine.

Answered from the vendors’ own pages

Falco: Does Falco block attacks?

No. It detects and emits events. Response requires Falco Talon or your own automation on top.

Netdata: Is Netdata fully open source?

The agent is GPLv3. The current dashboard interface is under a separate restrictive licence, so the complete product is open core rather than open source.

Falco: Is Falco owned by Sysdig?

Sysdig created and open sourced it, but it graduated within the CNCF in February 2024, so governance sits with the foundation rather than the vendor.

Netdata: Can it run without any connection to Netdata Cloud?

Yes, agents work standalone and dashboards can be served locally, but you lose fleet-wide views and need to configure local interface serving deliberately.

Falco: What does it cost?

The project is Apache 2.0 with no licence fee. The cost is the storage, routing, tuning and staff time needed to make its output useful.

Netdata: Does it replace Prometheus?

For host and container infrastructure metrics it often does. For custom application metrics with an existing exporter ecosystem and long retention, most teams keep both.

Falco: What kernel version do I need?

Kernel 5.8 or later for the default modern eBPF driver. Older hosts need the legacy eBPF probe or the kernel module.

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