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act

brew install act v0.2.89 MIT

Run GitHub Actions workflows locally in Docker containers without pushing to GitHub.

Why you might care

Test CI/CD pipelines on your machine before committing, saving time and GitHub Actions minutes. Act emulates the GitHub Actions runtime environment, making it ideal for debugging workflow failures quickly. Single binary, works with existing GitHub Actions YAML—no conversion needed.

Categories

ci-cd container-runtime development-tool

Alternatives

GitHub Actions Jenkins CircleCI GitLab CI
5.9k
30-day installs · #535
23.9k
90-day · #458
78.8k
365-day · #499

Build dependencies

go

Links

Blurb generated by claude-haiku-4-5 on today.

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  "categories": [
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  "deprecated": 0,
  "deprecation_reason": null,
  "desc": "Run your GitHub Actions locally",
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  "homepage": "https://nektosact.com",
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  "last_seen": "2026-06-20T23:34:18+00:00",
  "license": "MIT",
  "llm_generated_at": "2026-06-20T23:45:29+00:00",
  "llm_model": "claude-haiku-4-5",
  "name": "act",
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  "one_liner": "Run GitHub Actions workflows locally in Docker containers without pushing to GitHub.",
  "optional_dependencies": [],
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  "ruby_source_path": "Formula/a/act.rb",
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  "version_stable": "0.2.89",
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  "why_use_this": "Test CI/CD pipelines on your machine before committing, saving time and GitHub Actions minutes. Act emulates the GitHub Actions runtime environment, making it ideal for debugging workflow failures quickly. Single binary, works with existing GitHub Actions YAML\u2014no conversion needed."
}