GravityKit
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Comparison · Infra & APIs
Clair vs Microcks
A side-by-side editorial comparison of Clair and Microcks — release velocity, themes, recent moves, and the top alternatives to consider.
Clair vs Microcks: at a glance
What is Clair?
Clair 4.10 RC can read SBOMs to match Java vulnerabilities.
Clair cut its first 4.10.0 release candidate on November 13, eleven months after 4.9.0. Its Java indexers can now read CycloneDX SBOM files and treat them as the source of truth, and Red Hat's VEX data now covers Maven advisories, so Java packages in Red Hat images can be matched. It also reduces memory use when many packages share a source package.
What is Microcks?
Microcks 1.16 candidate adds IBM MQ mocking and moves to hardened images with faster startup
Microcks 1.16.0-rc1 is the first release candidate since June's 1.15.0-rc1. It adds AsyncAPI mocking and testing for IBM MQ, request/reply handling for Google Pub/Sub with Workload Identity auth, TLS on the HTTP endpoint and external references in the OpenAPI-to-MCP tool converter. The container images switch to Docker Hardened Images by default and replace Spring AOT with a Leyden AOT cache to cut startup time.
Clair vs Microcks: editorial side-by-side
Clair
2.5INFRA · APIS
Clair 4.10 RC can read SBOMs to match Java vulnerabilities.
◆ Current state
Clair cut its first 4.10.0 release candidate on November 13, eleven months after 4.9.0. Its Java indexers can now read CycloneDX SBOM files and treat them as the source of truth, and Red Hat's VEX data now covers Maven advisories, so Java packages in Red Hat images can be matched. It also reduces memory use when many packages share a source package.
◆ Where it's heading
Since 4.8 Clair has moved from Red Hat's older OVAL data to VEX, and each release follows Red Hat's security data more closely. 4.10 adds SBOMs as an input, so Clair can match what an image's own manifest declares, not only what it finds on disk.
◆ Prediction
More 4.10 release candidates and then a final are likely; the long gap between releases suggests that could take weeks.
Microcks
2.5INFRA · APIS
Microcks 1.16 candidate adds IBM MQ mocking and moves to hardened images with faster startup
◆ Current state
Microcks 1.16.0-rc1 is the first release candidate since June's 1.15.0-rc1. It adds AsyncAPI mocking and testing for IBM MQ, request/reply handling for Google Pub/Sub with Workload Identity auth, TLS on the HTTP endpoint and external references in the OpenAPI-to-MCP tool converter. The container images switch to Docker Hardened Images by default and replace Spring AOT with a Leyden AOT cache to cut startup time.
◆ Where it's heading
The project keeps broadening the messaging systems it can mock, now reaching enterprise brokers like IBM MQ and Amazon MQ over TLS. In parallel it is reworking its runtime for faster cold starts and smaller attack surface, and the MCP tool converter shows it treating API specs as inputs for AI agents as well as tests.
◆ Prediction
Further 1.16 candidates are likely to fix AOT and hardened-image edge cases, since this candidate already carries several JVM crash and probe fixes tied to that switch.
Alternatives to Clair and Microcks
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 Clair or Microcks.
Payload CMS
Payload's v4 beta.9 keeps every past image crop and raises the Node floor again.
Nautobot
Nautobot 3.3 alpha 2 adds test helpers and a cable location filter after 3.2.9's token-leak fix.
Shuffle
Shuffle tags builds almost daily, but the notes are empty.
KrakenD
KrakenD's community edition is shipping only dependency bumps.
Velociraptor
Velociraptor's recent releases are mostly about patching CVEs.
See all Clair alternatives → · See all Microcks alternatives →
Recent activity from Clair and Microcks
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 13h agoClairClair 4.10 RC reads CycloneDX SBOMs for Java matching
- 11d agoMicrocks1.16.0-rc1: IBM MQ mocking, hardened images, Leyden AOT startup
- 4mo agoMicrocks1.15.0-rc1: Angular 21, native-image netty fix, GraphQL extensions
- 7mo agoMicrocks1.14.0-rc2 extends OpenAI example generation to GPT-5 models
- 7mo agoMicrocks1.14.0-rc1 adds Sync-to-Async triggers and OCI-packaged Helm charts
- 11mo agoClairClair 4.9 moves CVSS data to NVD's 2.0 feeds
- 2y agoClairClair 4.8 replaces Red Hat OVAL data with VEX
- 2y agoClairClair 4.7.4 changes the default layer download location
- 2y agoClairClair 4.7.3 requires TLS 1.2 or newer
- 3y agoClairClair 4.7.2 drops the retired CRDA source
Frequently asked questions
What is the difference between Clair and Microcks?
They serve adjacent needs but don't currently overlap on shipped themes. Clair and Microcks are shipping at a similar cadence (velocity 2.5 vs 2.5, 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 Clair better than Microcks?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Clair and Microcks are shipping at a similar cadence (velocity 2.5 vs 2.5, 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 Clair?
Top Clair alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Clair alternatives" section above for the current picks, or visit /alternatives/clair for the full list with editorial commentary on each.
What are the best alternatives to Microcks?
Top Microcks alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Microcks alternatives" section above for the current picks, or visit /alternatives/microcks for the full list with editorial commentary on each.