Captain review
A low-cost option for open-source teams needing flake detection and CI test controls.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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.
Captain pros and cons
- 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
Captain fact sheet, pricing and score →
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