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Cybersecurity · head to head

Authelia vs Sysdig

Authelia logo

Authelia

Cybersecurity

Open-source authentication and two-factor portal for reverse proxies

From
Free
Rated
-
Full reviewWebsite
Sysdig logo

Sysdig

Cybersecurity

Cloud-native runtime security platform with real-time detection and response

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Authelia has a free tier, so it costs nothing to try first.
  • Each has a real cost: Authelia depends on a reverse proxy: it is not a standalone identity provider; Sysdig custom pricing requires sales contact, difficult to compare costs
  • They diverge on capability: Authelia covers Reverse proxy integration, Sysdig covers Real-time threat detection and response.
  • Prices and features above were last checked on 29 August 2026.

Where they differ

Only the attributes on which Authelia and Sysdig actually diverge.

Attributes where Authelia and Sysdig differ
AttributeAutheliaSysdig
Starting priceFreeOn request
Pricing modelOpen source, no licence feeCustom pricing based on number of hosts, events processed, or time series data
Free tierYesNo
PlatformsDocker, Kubernetes, Linux, Self-hostedKubernetes, Docker, AWS, GCP, Azure, Cloud-native
FoundedUnknown2013

Identical on both: user rating (Not yet rated), category (Cybersecurity).

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 Authelia

  • Reverse proxy integration
  • Two-factor authentication
  • Access control rules
  • Lightweight backends

Only in Sysdig

  • Real-time threat detection and response
  • Runtime intelligence
  • AI-powered security agents
  • Vulnerability management
  • Cloud Security Posture Management
  • Container and Kubernetes security
  • Infrastructure as Code security
  • Cloud Infrastructure Entitlement Management

What people use each for

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

Authelia

  • Putting a login and 2FA in front of self-hosted services that have nonenot Sysdig
  • Adding SSO across a small set of internal tools without a full identity platformnot Sysdig
  • Home and small-team infrastructure behind a single reverse proxynot Sysdig

Sysdig

  • Real-time threat detection in Kubernetes clustersnot Authelia
  • Container workload vulnerability prioritizationnot Authelia
  • Cloud security posture compliance monitoringnot Authelia
  • Infrastructure entitlement and permission analysisnot Authelia
  • AI workload security and threat remediationnot Authelia

Where each one falls short

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

Authelia

  • Depends on a reverse proxy: it is not a standalone identity provider
  • Configuration is YAML-first with no administrative interface, so changes mean editing files
  • Not a full IAM: user management, provisioning and federation are limited compared with Keycloak
  • Scales poorly as an organisation-wide identity solution, which is not its target

Sysdig

  • Custom pricing requires sales contact, difficult to compare costs
  • No published pricing tiers or calculator available
  • Primarily focused on cloud-native environments
  • Requires integration with existing SIEM or monitoring tools for full visibility
  • Steep learning curve for runtime security concepts

Pricing, plan by plan

Authelia

Free
  • AutheliaFree
    • Full functionality
    • No usage limits
    • Community support

Sysdig

On request

No published plan breakdown. See the Sysdig review.

Which should you pick?

Choose Authelia if

  • You need reverse proxy integration.
  • You want to start without paying.
  • You work on Docker, Kubernetes, Linux, Self-hosted.
  • You also want two-factor authentication.
Authelia review

Choose Sysdig if

  • You need real-time threat detection and response.
  • You work on Kubernetes, Docker, AWS, GCP, Azure, Cloud-native.
  • You also want runtime intelligence.
Sysdig review

Questions people ask

Is Authelia or Sysdig better?
Neither clearly leads. Authelia starts at Free and Sysdig at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Authelia or Sysdig?
Authelia has a free tier; the other does not. Paid plans start at Free for Authelia and On request for Sysdig.
Does Authelia or Sysdig run on more platforms?
Authelia runs on Docker, Kubernetes, Linux, Self-hosted. Sysdig runs on Kubernetes, Docker, AWS, GCP, Azure, Cloud-native.
Can I use Authelia for free?
Yes. Authelia has a free tier, so you can try it without paying. Sysdig starts at On request.
What is Authelia best used for?
Authelia is most often used for putting a login and 2fa in front of self-hosted services that have none, adding sso across a small set of internal tools without a full identity platform, home and small-team infrastructure behind a single reverse proxy. Of those, putting a login and 2fa in front of self-hosted services that have none and adding sso across a small set of internal tools without a full identity platform are not what Sysdig is typically brought in for.
What can Authelia do that Sysdig cannot?
Authelia covers Reverse proxy integration, Two-factor authentication, Access control rules, Lightweight backends. Sysdig covers Real-time threat detection and response, Runtime intelligence, AI-powered security agents, Vulnerability management.

Answered from the vendors’ own pages

Authelia: Is Authelia free?

Yes, open source with no licence fee.

Sysdig: How does Sysdig achieve real-time threat detection?

Sysdig uses runtime intelligence with kernel-level system visibility, capturing live system calls to detect threats at machine speed, typically within 2 seconds.

Source
Authelia: Does Authelia need a reverse proxy?

Yes. It integrates through forward authentication with Nginx, Traefik, Caddy or HAProxy rather than sitting in front of traffic itself.

Sysdig: What is runtime intelligence and how does it differ from configuration-based security?

Runtime intelligence reveals what is actually executing in cloud environments through kernel-level visibility, rather than relying on theoretical risks from configuration analysis alone.

Source
Authelia: Authelia or Keycloak?

Authelia is far lighter and aimed at protecting self-hosted services behind a proxy. Keycloak is a full identity and access management platform, and much more to run.

Sysdig: What cloud platforms does Sysdig support?

Sysdig supports AWS, GCP, Azure, and IBM Cloud with multiple regional data centers across US, EU, and other regions.

Source
Sysdig: Does Sysdig integrate with existing security tools?

Yes, Sysdig integrates with existing SIEM and monitoring tools to provide unified security visibility across cloud infrastructure.

Source
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