GravityKit
GravityKit folds every GravityView extension into one Pro plugin.
Comparison · Infra & APIs
Chromatic vs Harbor
A side-by-side editorial comparison of Chromatic and Harbor — release velocity, themes, recent moves, and the top alternatives to consider.
Chromatic vs Harbor: at a glance
What is Chromatic?
Chromatic opens a beta that lets coding agents read and fix visual test failures.
Chromatic spent 2026 moving beyond Storybook: Vitest Browser Mode launched in September and React Native visual testing on cloud iOS and Android devices was announced in October. On November 5 it opened Chromatic for agents in beta, where a coding agent reads the test results, fixes the regressions and repeats until the pull request is ready.
What is Harbor?
Harbor backports security hardening to 2.15 while 2.16 nears GA.
Harbor spent September and October on security patch candidates and rolling back defaults that broke webhooks and legacy signer pulls. The 2.16.0 candidates are its first feature release in that window, with arm64 builds, custom project roles, proxy-cache filters, referrer API proxying and Valkey caching. 2.15.5-rc1 brings the same period's hardening to the older line: size limits on audited and manifest request bodies, redacted URLs in error messages, a fix for replication filters and updated Trivy and Go versions.
Chromatic vs Harbor: editorial side-by-side
Chromatic
7.5INFRA · APIS
Chromatic opens a beta that lets coding agents read and fix visual test failures.
◆ Current state
Chromatic spent 2026 moving beyond Storybook: Vitest Browser Mode launched in September and React Native visual testing on cloud iOS and Android devices was announced in October. On November 5 it opened Chromatic for agents in beta, where a coding agent reads the test results, fixes the regressions and repeats until the pull request is ready.
◆ Where it's heading
Chromatic is turning from a review screen for humans into a feedback loop that coding agents can act on. Each new entry point (Vitest, React Native, now agents) widens who and what sends work through its visual tests.
◆ Prediction
The beta post is brief, so how agents connect is unclear; expect a follow-up naming the supported agents and moving this toward general availability.
Harbor
5.0INFRA · APIS
Harbor backports security hardening to 2.15 while 2.16 nears GA.
◆ Current state
Harbor spent September and October on security patch candidates and rolling back defaults that broke webhooks and legacy signer pulls. The 2.16.0 candidates are its first feature release in that window, with arm64 builds, custom project roles, proxy-cache filters, referrer API proxying and Valkey caching. 2.15.5-rc1 brings the same period's hardening to the older line: size limits on audited and manifest request bodies, redacted URLs in error messages, a fix for replication filters and updated Trivy and Go versions.
◆ Where it's heading
Three candidates in two weeks suggest 2.16.0 is close to final. The release moves Harbor toward multi-arch and finer access control after a quarter of security-only work.
◆ Prediction
Expect 2.16.0 GA within one to two weeks, followed by matching 2.15.x and 2.14.x patch releases.
Alternatives to Chromatic and Harbor
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 Chromatic or Harbor.
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.
Clair
Clair 4.10 RC can read SBOMs to match Java vulnerabilities.
Shuffle
Shuffle tags builds almost daily, but the notes are empty.
KrakenD
KrakenD's community edition is shipping only dependency bumps.
See all Chromatic alternatives → · See all Harbor alternatives →
Recent activity from Chromatic and Harbor
Latest ship moves from both products, interleaved chronologically. ⚡ = editorial spark.
- 2d agoHarbor2.15.5 RC1: request size limits, redacted errors, replication fix
- 4d agoHarbor2.16.0 RC3: arm64, custom roles, referrer API proxying
- 8d agoHarbor2.16.0 RC2: Valkey cache, task failure details, ACR chunked uploads
- 8d agoChromaticChromatic for agents beta ⚡
- 17d agoChromaticChromatic for React Native ⚡
- 18d agoHarbor2.16.0 RC1: arm64 builds, custom project roles, proxy-cache filters
- 23d agoHarbor2.14.6 RC2: Go CVE fixes and decompression limit
- 24d agoChromaticComponent owners auto-assign reviewers; combined Library view
- 1mo agoHarbor2.14.6 RC1: private-network webhooks and legacy signer pulls restored
- 1mo agoChromaticQuarantine flaky tests
- 2mo agoChromaticIntroducing Chromatic for Vitest Browser Mode ⚡
- 2mo agoChromaticChromatic changelog: August 2026
Frequently asked questions
What is the difference between Chromatic and Harbor?
They serve adjacent needs but don't currently overlap on shipped themes. Chromatic is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 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 Chromatic better than Harbor?
Sparkpulse doesn't pick a winner — we score release velocity, not feature parity. Chromatic is currently shipping more aggressively (velocity 7.5 vs 5.0), with 2 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 Chromatic?
Top Chromatic alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Chromatic alternatives" section above for the current picks, or visit /alternatives/chromatic for the full list with editorial commentary on each.
What are the best alternatives to Harbor?
Top Harbor alternatives in Infra & APIs are ranked by recent ship velocity. Browse the "Harbor alternatives" section above for the current picks, or visit /alternatives/harbor for the full list with editorial commentary on each.