Captain
Captain: A low-cost option for open-source teams needing flake detection and CI test controls. Ranked #5 of 31 in Test Flakiness Management Software by our editors (8.8/10); pricing: Free plan; best for open-source teams seeking low-cost flake analytics.
At a glance
- Editor score8.8 / 10
- PricingFree plan
- Best forOpen-source teams seeking low-cost flake analytics
- Free planYes
- Paid from$10/unit usage-based
- Quarantine workflowYes
- Founded2022 · Columbus, Ohio, United States
- Facts checked22 Sep 2026
Where it wins
- Open-source mode includes detection, quarantine, retries, and partitioning
- Pro adds flaky-test analytics and 90-day performance retention
- Supports major CI platforms and a broad range of test frameworks
Where it doesn't
- Integration coverage is narrower than some category alternatives
- Automatic partition rebalancing is limited to the Pro plan
- Advanced cloud analytics require paid usage-based pricing
Our verdict on Captain
Captain is an open-source command-line tool and cloud service for software engineering teams managing unreliable test suites. It detects flaky tests, retries failed and flaky tests, supports quarantine workflows, partitions test suites across parallel jobs, and tracks test performance. The OSS mode suits teams that want a free, file-configured approach, while Captain Cloud adds UI-based workflows and historical analytics. Its supported frameworks include xUnit, ExUnit, Ginkgo, go test, Bun, Cucumber, Cypress, Jest, Mocha, Playwright, Vitest, PHPUnit, pytest, unittest, and several Ruby testing frameworks.
Pricing is usage-based rather than per user or seat. The OSS plan provides parallel partitioning, flaky-test tracking, quarantine, and failed-test retries. Pro costs $10 per million test results uploaded and adds automatic partition rebalancing based on recent performance, UI-based quarantine, analytics on problematic flaky tests, and 90-day test-performance retention. Enterprise offers custom contracts, custom invoicing, and unlimited scale. This structure makes Captain particularly suitable for teams that want to begin with open-source tooling and pay according to uploaded test-result volume as cloud needs grow.
Captain connects with RWX, GitHub Actions, CircleCI, Buildkite, and GitLab, and provides web, macOS, Linux, and API access. Its cloud API can query flaky tests, while the product’s core controls cover detection, quarantine, retries, partitioning, and reliability tracking. Teams prioritizing an open-source option and focused flake analytics should consider Captain. Organizations needing broader integration or platform coverage may prefer an alternative with a wider ecosystem.
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Captain pricing
All 3 Captain plans and prices →
Captain fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $10/unit usage-based |
| Flake detection | Yes |
| Quarantine workflow | Yes |
| Failure clustering | Not verified |
| Rerun policies | Yes |
| Supported frameworks | xUnit, ExUnit, Ginkgo, go test, Bun, Cucumber, Cypress, Jest, Karma, Mocha, Playwright, TestCafe, Vitest, PHPUnit, pytest, unittest, Ruby Cucumber, minitest, RSpec |
| Issue tracker links | Not verified |
| Deployment | Cloud |
| Platforms | Web, macOS, Linux |
| Compliance & security | SOC 2 |
| Support | Email, Live chat, Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 5 integrations: RWX, GitHub Actions, CircleCI, Buildkite, GitLab |
| Pricing | Free plan (source) |
| Website | rwx.com |
| Facts checked | 22 Sep 2026 |
Captain integrations
Captain lists 5 integrations on its own site.
- RWX
- GitHub Actions
- CircleCI
- Buildkite
- GitLab
Alternatives to Captain
- Flakiness.ioA broad flake analytics suite with AI workflows, self-hosting, and a free plan.9.4
- Trunk Flaky TestsA broad flakiness-management option for large, multi-framework CI estates.9.3
- TesteryA broad test execution platform with practical flake detection and quarantine workflows.9.1
See all Captain alternatives →
Captain vs the competition
- Captain vs Flakiness.io
- Captain vs Trunk Flaky Tests
- Captain vs Testery
- Captain vs BuildPulse
- Captain vs Datadog Test Optimization
- Captain vs Develocity
Compare Captain with any tool side by side →
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The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Captain for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.
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Featured on iTechGuides
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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