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Captain

rwx.com

Free plan Open source WebWindowsmacOSLinuxAPI
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Spec score 9.4 #3 of 31 in Test Flakiness Management Software

What it is

Captain is an open-source command-line tool for finding flaky tests and managing test execution. It measures test reliability, can retry failed tests, and can quarantine flaky ones to unblock builds. By tracking test runtimes, it balances files across parallel jobs. Framework integrations include xUnit, ExUnit, Ginkgo, go test, Bun, Cucumber, Cypress, Jest, Karma, Mocha, Playwright, TestCafe, Vitest, PHPUnit, pytest, unittest, minitest, and RSpec. CI integrations listed include RWX, GitHub Actions, CircleCI, Buildkite, and GitLab. Framework results can be reviewed in a web interface for managing flakes, retries, quarantine, and suite partitioning. Feature availability varies: xUnit does not include partitioning, and Karma does not list retries or partitioning. The free OSS plan includes file-based configuration, partitioning, flaky-test tracking and quarantine, and retries. Pro costs what you agree with the maker, billed per million test results uploaded, and adds analytics on flaky tests and performance trends with 90-day retention.

Spec sheet

What it does
Captain is an open-source CLI for detecting flaky tests, retrying failures, quarantining tests, partitioning test files for parallel jobs, and producing failure summaries.Read 15 Oct 2026 · rwx.com
Product
Captain is an open source CLI for detecting flaky tests, retrying and quarantining them, and partitioning test files for parallel execution.Read 30 Sep 2026 · rwx.com
Security
RWX says it is SOC 2 Type 2 compliant and that Drata tests its security and IT infrastructure daily.Read 30 Sep 2026 · rwx.com
Support
RWX offers documentation, GitHub issues for open source tools, Discord access to its engineering team, and shared Slack channels for existing customers.Read 30 Sep 2026 · rwx.com
License
The public Captain repository is released under the MIT license.Read 15 Oct 2026 · github.com
Headquarters
Columbus, Ohio, United StatesRead 28 Sep 2026 · rwx.com
Founded
LinkedIn lists RWX as founded in 2022.Read 15 Oct 2026 · linkedin.com
API scope
The documented Captain API includes test-suite and flaky-test resources and provides a whoami authentication check.Read 15 Oct 2026 · rwx.com
Automatic retries
Captain can retry failed tests and target retry behavior at known flaky tests.Read 15 Oct 2026 · rwx.com
CI integrations
Captain documentation provides integrations for RWX, GitHub Actions, CircleCI, Buildkite, GitLab and other CI/CD platforms.Read 15 Oct 2026 · rwx.com
CLI installation
Install options include a GitHub Action, Homebrew on macOS, and downloadable Linux binaries for x86_64 and aarch64.Read 15 Oct 2026 · rwx.com
Cloud analytics
Captain Cloud adds web-based test-result analysis, flaky-test triage, automatic quarantine management and performance trends retained for 90 days on Pro.Read 15 Oct 2026 · rwx.com
Cloud interface
Captain's test framework integration lets users analyze results in a web interface and track flakes, quarantine or retry tests, and partition suites.Read 30 Sep 2026 · rwx.com
Company founders
Crunchbase lists Dan Manges as co-founder and Tommy Graves as founder and CTO.Read 15 Oct 2026 · crunchbase.com
Company headquarters
LinkedIn lists RWX headquarters in Columbus, Ohio, at 829 Bethel Road, Suite 302.Read 15 Oct 2026 · linkedin.com
Company legal name
Crunchbase identifies the maker's legal name as ReadWriteExecute, Inc.Read 15 Oct 2026 · crunchbase.com
Company size
LinkedIn lists RWX as having 11–50 employees.Read 15 Oct 2026 · linkedin.com
Current service status
The RWX status page currently reports Captain as operational along with RWX Cloud and ABQ.Read 15 Oct 2026 · status.rwx.com
Cypress integration
Cypress requires the @rwx-cloud/cypress-rwx-reporter and mocha-multi-reporters to emit Captain-compatible results.Read 15 Oct 2026 · rwx.com
Documentation depth
Captain documentation covers quickstarts, installation, framework-specific setup, CI providers, cloud API, configuration and CLI commands.Read 15 Oct 2026 · rwx.com
Feature availability
Feature availability varies by framework; for example, the listed xUnit integration does not include partitioning and Karma does not list retries or partitioning.Read 30 Sep 2026 · rwx.com
Flake detection
Captain identifies tests that produce inconsistent results so teams can track reliability problems.Read 15 Oct 2026 · rwx.com
Framework feature differences
Capabilities differ by framework; for example, xUnit lacks partitioning and Karma lacks built-in retries and partitioning.Read 15 Oct 2026 · rwx.com
Framework support
The documented integrations include xUnit, ExUnit, Ginkgo, go test, Bun, Cucumber, Cypress, Jest, Karma, Mocha, Playwright, TestCafe, Vitest, PHPUnit, pytest, unittest, minitest, and RSpec.Read 30 Sep 2026 · rwx.com
Funding news
VentureBeat reported on August 4, 2026 that RWX raised a $12 million Series A led by Hyde Park Venture Partners.Read 15 Oct 2026 · venturebeat.com
Independent score
FAUN.dev gives RWX an overall community score of 68/100 and rates portability at 42/100.Read 15 Oct 2026 · faun.dev
Limit: cloud dependency
Automatic flake detection, cloud-managed quarantine and continuously rebalanced partitions require Captain Cloud; OSS mode uses manually maintained local files.Read 15 Oct 2026 · rwx.com
Limit: framework coverage
Captain's feature availability depends on the selected test framework, and the documentation says the team is still expanding framework support.Read 15 Oct 2026 · rwx.com
Limit: review availability
G2 has no user reviews for RWX, so independent user praise or complaint patterns are not available there.Read 15 Oct 2026 · g2.com
Maker and headquarters
The maker is ReadWriteExecute, Inc.; its About page describes RWX as a cloud computing platform but does not state a headquarters or founding year.Read 30 Sep 2026 · rwx.com
Parallel execution
Captain tracks test runtimes and balances test files across parallel jobs.Read 30 Sep 2026 · rwx.com
Parallel partitioning
Captain uses test-file runtime data to divide suites into approximately balanced parallel jobs.Read 15 Oct 2026 · rwx.com
Pro analytics
Captain Pro provides analytics on problematic flaky tests and test performance trends with 90 day retention.Read 30 Sep 2026 · rwx.com
Public API
Captain Cloud exposes HTTP endpoints under cloud.rwx.com/captain/api and authenticates requests with bearer access tokens.Read 15 Oct 2026 · rwx.com
Quarantine
Quarantined test failures can be prevented from failing the build, allowing teams to keep shipping while fixing the tests.Read 15 Oct 2026 · rwx.com
Rating on G2
0 out of 5 from 0 reviews for RWX.Read 15 Oct 2026 · g2.com
Recent incident record
The status page lists no reported incidents for each day from September 27 through October 11, 2026.Read 15 Oct 2026 · status.rwx.com
Release update
Release notes dated October 7, 2026 announce Captain 2.9.1 with Pest support; version 2.9.0 added custom partition-discovery commands on September 26, 2026.Read 15 Oct 2026 · rwx.com
Repository activity
The Captain GitHub repository shows 100 stars, 5 forks and 341 commits.Read 15 Oct 2026 · github.com
Retries and quarantine
Captain can retry failed tests and quarantine flaky tests to unblock builds.Read 30 Sep 2026 · rwx.com
Security compliance
RWX states that its service is SOC 2 Type 2 compliant and uses Drata for daily security and infrastructure testing.Read 15 Oct 2026 · rwx.com
Supported frameworks
Documented integrations include xUnit, ExUnit, Ginkgo, go test, Bun, Cucumber, Cypress, Jest, Karma, Mocha, Playwright, TestCafe, Vitest, Pest, PHPUnit, pytest, unittest, Ruby Cucumber, minitest and RSpec.Read 15 Oct 2026 · rwx.com
Test reliability
Captain can measure test reliability and automatically detect flaky tests.Read 30 Sep 2026 · rwx.com
Windows support
The installation guide says Windows users should contact RWX while the company prioritizes Windows support.Read 15 Oct 2026 · rwx.com

Plans and prices

OSS Free file-based configuration · parallel test-suite partitioning · flaky-test tracking and quarantine · failed-test retries Read 15 Oct 2026 · rwx.com
Pro Priced on request Per million test results uploaded automatically rebalanced partitions · UI quarantine · flaky test analytics · 90 day performance trend retention Read 30 Sep 2026 · rwx.com
Pro $10, paid once per million test results uploaded automatic partition rebalancing · UI quarantine · flaky-test analytics · 90-day performance retention Read 15 Oct 2026 · rwx.com
Enterprise Priced on request custom contracts · custom invoicing · unlimited scale Read 15 Oct 2026 · rwx.com

Every Captain plan and price →

Strong points and limits

Strong points

  • Detects flaky tests and can retry failures
  • Quarantines flaky tests to unblock builds
  • Tracks runtimes to balance parallel jobs
  • Free OSS plan includes partitioning and retries

Limits

  • Feature availability varies by framework
  • xUnit integration does not include partitioning
  • Karma does not list retries or partitioning
  • Pro is billed per million uploaded test results

Who it suits

Captain suits development teams that want to detect flaky tests, retry or quarantine failures, and distribute test files across parallel jobs. Teams should check whether their chosen framework integration includes the needed features.

Verdict

Captain combines test reliability tools with parallel suite partitioning and CI integrations. Verify framework-specific feature coverage and the Pro billing unit before adopting it.

Where Specifiction places it

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