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Comparison

Icinga vs SigNoz

Icinga and SigNoz both land on Depends.

SigNoz

signoz.io

Depends
Confidence: Medium

Buy if you're an engineering team comfortable with OpenTelemetry and some ops work who wants to cut Datadog-class bills.

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Icinga versus SigNoz
CompareIcingaSigNoz
VerdictDependsDepends
Best forLarge heterogeneous server fleetsEngineering teams ditching Datadog bills
Who it's not forSmall teams without a dedicated sysadminTeams with nobody to run ClickHouse and upgrades
PrivacyActively patched, but repeated CVEs in 2024-2026, including a critical auth bypass (CVE-2025-48057).10SOC 2 Type II claimed, but multiple 2026 CVEs (SQL injection, auth bypass) mean you must patch fast.
Support qualityPaid SLAs exist but no reliable user evidence foundNo user support evidence in sources
Public sentimentUsers praise Icinga's power and scale but frequently criticize its documentation, setup complexity, and the move to paid repository access.²Users like the price and OpenTelemetry approach but report unstable log queries and UI rough edges in production.
Biggest gotchaRepository access moved behind paid subscriptions; some long-time users migrated away⁷SQL injection CVEs in alert endpoints, unfixed until 0.142.1

Pick Icinga when

  • Large heterogeneous server fleets
  • Nagios refugees wanting a modern fork
  • MSPs monitoring many client environments
  • Open-source shops with dedicated ops staff

When Icinga is not a fit

  • Small teams without a dedicated sysadmin
  • Anyone wanting transparent, published pricing
  • Buyers needing quick, low-maintenance setup
  • Guess: Kubernetes-first teams wanting turnkey observability

Pick SigNoz when

  • Engineering teams ditching Datadog bills
  • OpenTelemetry-standard shops
  • Self-hosters with ops capacity
  • Startups consolidating logs, traces, metrics

When SigNoz is not a fit

  • Teams with nobody to run ClickHouse and upgrades
  • Buyers expecting polished, stable UX today
  • Orgs that can't patch within days of a CVE
  • Non-engineering teams; this is dev-only tooling

Sources

  1. Icinga review: Enterprise-grade, open-source network monitoring that scales . NetworkWorldnetworkworld.com
    review
  2. Icinga Reviews & Ratings 2026 . Gartner Peer Insightsgartner.com
    review
  3. Icinga Products . 22 Reviews on G2g2.com
    review
  4. Icinga Stack Customer Reviews . SoftwareReviewssoftwarereviews.com
    review
  5. Icinga vs Nagios . Reddit r/sysadminreddit.com
    review
  6. Icinga documentation complaints . Reddit r/icingareddit.com
    review
  7. Reactions to Icinga charging for repos . Reddit r/icingareddit.com
    review
  8. Icinga Pricing and Subscription Optionsicinga.com
    official
  9. CVE-2025-48057 release blogicinga.com
    security
  10. CCB advisory: critical Icinga 2 vulnerability, patch immediatelyccb.belgium.be
    security
  11. Path traversal vulnerabilities in Icinga Web . SonarSourcesonarsource.com
    security
  12. CVE-2025-61908 . SentinelOne vulnerability databasesentinelone.com
    security
  13. Icinga Companyicinga.com
    official
  14. Icinga Revenue & Valuation . GetLatkagetlatka.com
    news
  15. SigNoz homepagesignoz.io
    official
  16. SigNoz Pricingsignoz.io
    official