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Comparison · Infra & APIs

CircleCI vs Quay

A side-by-side editorial comparison of CircleCI and Quay — release velocity, themes, recent moves, and the top alternatives to consider.

CircleCI vs Quay: at a glance

FeatureCircleCIQuay
SectorInfra & APIsInfra & APIs
Velocity score6.35.0
Sparks · 30d00
Top themesci/cd, debugging, api deprecation, config validationcontainer-registry, security, cve-patching, lts-maintenance
Last editorial update14h ago14h ago
WebsiteVisit →Visit →

What is CircleCI?

CircleCI's SSH reruns now open from the browser, through one trusted address.

CircleCI is tidying both ends of the pipeline before December. Config warnings become hard failures on December 14, and the v1 project APIs lose their branches field on December 7 after brownouts on November 17 and December 1. On November 12 Rerun job with SSH moved to a single host, ssh.circleci.com, on ports 22 or 443 with fixed IPs, plus a terminal that opens from the job page. Functions, versioned job-setup programs agents can configure, entered beta on November 4.

Read the full CircleCI trajectory →

What is Quay?

Quay patches three supported lines on one afternoon, mostly CVE bumps.

Quay's enterprise lines ship paired monthly security releases. On November 13 three lines moved within minutes: 3.14.10, 3.12.24 and 3.10.28, each bumping PyJWT, cryptography, pillow, oauthlib and other pinned libraries for CVEs, plus a fix for an onboarding issue. The mirror-registry installer tagged v3.0.0 on November 9 with only dependency bumps noted.

Read the full Quay trajectory →

CircleCI vs Quay: editorial side-by-side

C
CircleCI
INFRA · APIS
6.3

CircleCI's SSH reruns now open from the browser, through one trusted address.

◆ Current state

CircleCI is tidying both ends of the pipeline before December. Config warnings become hard failures on December 14, and the v1 project APIs lose their branches field on December 7 after brownouts on November 17 and December 1. On November 12 Rerun job with SSH moved to a single host, ssh.circleci.com, on ports 22 or 443 with fixed IPs, plus a terminal that opens from the job page. Functions, versioned job-setup programs agents can configure, entered beta on November 4.

◆ Where it's heading

CircleCI is closing old paths (lenient config, v1 API fields, old Xcode images) while making failures easier to reach: job-linked commit statuses last week, browser SSH this week. The newer Functions beta and API v3 are where users are being steered.

◆ Prediction

Expect more debug tools on the job page and further v1 API removals pointing users to v3 before year end.

Q
Quay
INFRA · APIS
5.0

Quay patches three supported lines on one afternoon, mostly CVE bumps.

◆ Current state

Quay's enterprise lines ship paired monthly security releases. On November 13 three lines moved within minutes: 3.14.10, 3.12.24 and 3.10.28, each bumping PyJWT, cryptography, pillow, oauthlib and other pinned libraries for CVEs, plus a fix for an onboarding issue. The mirror-registry installer tagged v3.0.0 on November 9 with only dependency bumps noted.

◆ Where it's heading

Quay's public changelog is now maintenance only: CVE pins backported to every supported line and build files aligned for Red Hat's ART pipeline. No user-facing features have shipped on these lines in recent months.

◆ Prediction

Expect the next set of paired CVE releases around mid-December; nothing in the entries points to a feature release.

Alternatives to CircleCI and Quay

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 CircleCI or Quay.

See all CircleCI alternatives → · See all Quay alternatives →

Recent activity from CircleCI and Quay

Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.

  1. 20h agoQuayQuay 3.10.28 backports November CVE fixes to LTS
  2. 20h agoQuayQuay 3.12.24 patches PyJWT, pillow and other CVEs
  3. 20h agoQuayQuay 3.14.10 rolls up CVE fixes and RHEL 8 builds
  4. 1d agoCircleCICircleCI opens SSH reruns from the browser via one host
  5. 4d agoCircleCICircleCI drops branches from v1 project APIs on December 7
  6. 4d agoCircleCIConfig validation warnings will block pipelines on December 14, 2026
  7. 4d agoQuaymirror-registry 3.0.0 tagged with only a dependency bump noted
  8. 4d agoCircleCIImproved commit status links and failure details
  9. 4d agoCircleCIServer 4.9.8 moves Nomad clients to Ubuntu 24.04
  10. 4d agoCircleCIXcode 27.3 Beta 1 Available
  11. 1mo agoQuayQuay 3.12.23 patches four CVEs and adds ART build file
  12. 1mo agoQuayQuay 3.10.27 backports October CVE fixes to LTS

Frequently asked questions

What is the difference between CircleCI and Quay?

They serve adjacent needs but don't currently overlap on shipped themes. CircleCI is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. See the at-a-glance table above for a side-by-side breakdown of velocity, recent sparks, and editorial themes.

Is CircleCI better than Quay?

Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. CircleCI is currently shipping more aggressively (velocity 6.3 vs 5.0), with 0 editorial sparks in the last 30 days against 0. For your specific use case, the alternatives sections above list other Infra & APIs products to evaluate alongside.

What are the best alternatives to CircleCI?

Top CircleCI alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "CircleCI alternatives" section above for the current picks, or visit /alternatives/circleci for the full list with editorial commentary on each.

What are the best alternatives to Quay?

Top Quay alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Quay alternatives" section above for the current picks, or visit /alternatives/quay for the full list with editorial commentary on each.