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Awesome Open Source Supporters Awesome

A curated list of awesome companies that offer their tools and services for free to Open Source and public projects.

Note: While there are many companies that have great free tiers (Slack, for example), this list focuses specifically on organizations that have made an overt commitment to the Open Source community through additional offerings.

Code Coverage

  • Codecov - Test coverage monitoring & alerting.
  • Coveralls - Test coverage history & statistics.

Code Quality

  • Better Code Hub - Source code maintainability analysis.
  • Codacy - Automated code reviews & analytics.
  • Code Climate - Automated code review & health analysis.
  • codebeat - Automated code review for mobile and web.
  • CodeFactor - Automated static analysis for C#, Java, CSS, JS, Ruby, Go and Python source code.
  • Hound - Source code style review.
  • lgtm - Automated code reviews for developers.
  • PullApprove - Approve GitHub pull request through code review.
  • Reviewable - Automated GitHub code reviews.
  • Scrutinizer - Continuous code quality analysis.
  • SonarCloud - Continuous code inspection.
  • StyleCI - PHP code style review.

Continuous Integration

  • AppVeyor - CI/CD for Windows developers.
  • Bitrise - Hosted CI/CD for Android and iOS, free for Public Projects.
  • CircleCI - Docker-based building with support of customized workflows.
  • Codefresh - Docker-native CI/CD.
  • Codeship - Continuous integration, delivery, and deployment.
  • DeployHQ requires-approval - Deployment automation.
  • Sauce Labs - Cross-browser testing, Selenium testing, and mobile testing.
  • Semaphore - Fast automated CI/CD.
  • Travis-CI - Automated CI/CD for Open Source.

Dependency Management

  • Dependabot - Automated dependency updates for Ruby, Python, JavaScript and PHP.
  • Greenkeeper - Automated dependency management for NPM packages (on GitHub).
  • - Python dependency management.
  • Snyk - Continuous dependency vulnerability assessment.
  • - Dependency update as a service.


  • GitBook - Collaborative application documentation.
  • Read the Docs - Documentation hosting platform.

Exception Reporting

  • BugSnag requires-approval - Exception tracking and reporting.
  • Honeybadger requires-approval non-commercial - Exception and uptime monitoring for Ruby.

Package Management

  • MyGet requires-approval - NuGet, npm, Bower, Maven, and Vsix package hosting.
  • packagecloud requires-approval - Maven, RPM, DEB, PyPi, and RubyGem hosting.

Project Management

  • - Project management for agile developers.
  • ZenHub - Agile GitHub project management.
  • Zube - Project management for GitHub issues.


  • Check my Website requires-approval - Automated website monitoring.
  • requires-approval - Cron job monitoring.
  • WebGazer requires-approval - Uptime and cron job monitoring with hosted status pages.


  • Crowdin requires-approval - Localization management platform.
  • LingoHub requires-approval - Translation management.
  • Locale - Localization and Translation.
  • Lokalise requires-approval - Localization and Translation Software Tool.
  • POEditor requires-approval - Localization management platform.
  • Transifex requires-approval - Localization platform for translating digital content.
  • Weblate requires-approval - Web-based continuous localization.

Version Control

  • BitBucket - Git and Mercurial repository hosting.
  • GitHub - Git project hosting.
  • GitLab - Git project hosting.
  • Plastic SCM requires-approval - Distributed Git project hosting.


  • Algolia - requires-approval Search as a service API.
  • Apiary requires-approval - API design, development, and documentation platform.
  • Atlassian requires-approval - Productivity tools for teams (Jira, Confluence, Bamboo, HipChat).
  • Auth0 requires-approval - SSO & token-based authentication.
  • BackHub - Automated GitHub repository backups.
  • BrowserStack requires-approval - Cross-browser testing tool.
  • Cloud9 - Cloud-based development environments.
  • Codota - AI pair programming assistant.
  • Firezone requires-approval - Self-hosted remote access built on WireGuard.
  • GlobalSign requires-approval - SSL certificates for open source projects.
  • Helpmonks requires-approval - Collaborative team email inboxes.
  • JetBrains requires-approval non-commercial - Software vendor specializing in the creation of intelligent development tools.
  • - Open source discovery service.
  • LoginRadius requires-approval - Authentication and SSO Made Simple.
  • Mailman 3 requires-approval - Mailing lists for distributed teams.
  • Mailtrap requires-approval - Fake SMTP testing server.
  • Netlify requires-approval - Hosting for static sites.
  • Sourcegraph - Smart source code transparency.
  • Siteleaf - CMS for static sites.
  • requires-approval - Automate end-to-end email tests with unlimited mailboxes and a GraphQL API.
  • Transloadit requires-approval - API for file uploading & encoding.
  • Zulip requires-approval - Chat for distributed teams.


Please see the contributor guidelines and code of conduct for details.



While many companies use the public repositories feature of GitHub, Bitbucket, and GitLab to determine the Open Source status of a project, there are others who require more verification. These companies have been marked with a requires-approval tag, indicating that an application process is required to take advantage of their Open Source benefits.


Some companies make their products available for open source, but only for non-commercial projects. These companies have been marked with a non-commercial tag.