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Comparison · Infra & APIs
Authelia vs Icinga
A side-by-side editorial comparison of Authelia and Icinga — release velocity, themes, recent moves, and the top alternatives to consider.
Shared themes:self-hosted
Authelia vs Icinga: at a glance
What is Authelia?
Authelia ships weekly OIDC patches as v4.39 works through a long conformance backlog
Authelia is in a steady patch release cycle for v4.39, shipping OIDC conformance fixes, proxy integration patches, and storage correctness fixes every few days. Recent releases address edge cases in consent flows (pre-configured consent saved twice, consent redirect status codes), JARM alg-none conformance, Envoy authz path handling, and SMTP IPv6 literal address support.
What is Icinga?
Icinga 2 is fixing the same API permission holes across every supported branch.
Icinga 2 ships security fixes as simultaneous releases across its 2.14, 2.15, and 2.16 branches, and has now done so twice in five weeks. The 18 August pair - v2.16.5 and v2.15.6, tagged 25 seconds apart - closes an events/* permission bypass on /v1/events and a memory-exhaustion path where a node could crash another using the 1 GB message limit, now capped at 16 MiB for messages from lower in the hierarchy. v2.16.5 additionally repairs an IcingaDB regression introduced in v2.16.0.
Authelia vs Icinga: editorial side-by-side
Authelia
5.0INFRA · APIS
Authelia ships weekly OIDC patches as v4.39 works through a long conformance backlog
◆ Current state
Authelia is in a steady patch release cycle for v4.39, shipping OIDC conformance fixes, proxy integration patches, and storage correctness fixes every few days. Recent releases address edge cases in consent flows (pre-configured consent saved twice, consent redirect status codes), JARM alg-none conformance, Envoy authz path handling, and SMTP IPv6 literal address support.
◆ Where it's heading
The high frequency of point releases reflects a long tail of OIDC conformance issues surfaced as more client libraries and proxy configurations hit edge cases in production. The v4.39.21 batch was notably large—over 30 fixes covering LDAP stale aliases, storage AAD/HKDF hardening, token regeneration semantics, and pre-compressed asset serving. This is a codebase being actively hardened rather than feature-extended.
◆ Prediction
A v4.40.0 feature release is the logical next milestone; the dense patch cadence in 4.39 typically precedes a feature window. Expect new OIDC profile features or expanded token management based on the storage and JWT work in recent patches.
Icinga
5.0INFRA · APIS
Icinga 2 is fixing the same API permission holes across every supported branch.
◆ Current state
Icinga 2 ships security fixes as simultaneous releases across its 2.14, 2.15, and 2.16 branches, and has now done so twice in five weeks. The 18 August pair - v2.16.5 and v2.15.6, tagged 25 seconds apart - closes an events/* permission bypass on /v1/events and a memory-exhaustion path where a node could crash another using the 1 GB message limit, now capped at 16 MiB for messages from lower in the hierarchy. v2.16.5 additionally repairs an IcingaDB regression introduced in v2.16.0.
◆ Where it's heading
The recurring theme is that the API's filter and permission model was more permissive than intended. July's critical release introduced a filter-expression permission so DSL filters in API queries can be restricted per user, with enforcement deliberately deferred to v2.17; August's pair fixes filter expressions on /v1/events not being permission-checked at all. Cluster message handling is being tightened in parallel. The project is clearly working through an audit of the API surface, and it is backporting every finding rather than pushing users onto the newest branch.
◆ Prediction
Enforcement of the filter-expression permission is already scheduled for v2.17, so that release should be the one where the opt-in restrictions become mandatory - expect more backported API permission fixes across all three branches before it lands.
Alternatives to Authelia and Icinga
Other Infra & APIs products tracked by Sparkpulse, ranked by recent ship velocity. Each card links to a full editorial trajectory and lets you pivot into a head-to-head comparison with either Authelia or Icinga.
Jackett
Jackett ships daily indexer maintenance at a consistent one-release-per-day cadence.
Kubernetes
Kubernetes v1.37 promotes gang scheduling to Beta, closing the gap with dedicated ML schedulers.
Resend
Resend ships SSO and enters the enterprise conversation as its product surface broadens.
CircleCI
CircleCI ships an MCP server and auto-rollback deployments, moving well past pure CI.
GitHub
GitHub Copilot splits into cost tiers and deepens agentic automation across the dev stack
See all Authelia alternatives → · See all Icinga alternatives →
Recent activity from Authelia and Icinga
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 6h agoAutheliav4.39.27
- 3d agoAutheliav4.39.26
- 5d agoAutheliav4.39.25
- 6d agoAutheliav4.39.24
- 7d agoAutheliav4.39.23
- 12d agoAutheliav4.39.22
- 28d agoIcingav2.16.5: /v1/events permission bypass and node memory exhaustion fixed
- 28d agoIcingav2.15.6: the 2.15-branch twin of the August security fixes
- 2mo agoIcingaFixes API auth regression and hanging endpoint connections
- 2mo agoIcingaSecurity release for the 2.14 branch, adds filter-expression permission
- 2mo agoIcingaSecurity release for the 2.15 branch
- 2mo agoIcingaSecurity release for the current 2.16 branch
Frequently asked questions
What is the difference between Authelia and Icinga?
Both compete on the same themes — self-hosted — within Infra & APIs. Authelia and Icinga are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.
Is Authelia better than Icinga?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Authelia and Icinga are shipping at a similar cadence (velocity 5.0 vs 5.0, both within Sparkpulse's "active" band). For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.
What are the best alternatives to Authelia?
Top Authelia alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Authelia alternatives" section above for the current picks, or visit /alternatives/authelia for the full list with editorial commentary on each.
What are the best alternatives to Icinga?
Top Icinga alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Icinga alternatives" section above for the current picks, or visit /alternatives/icinga for the full list with editorial commentary on each.