Semaphore CI/CD is now open source

Semaphore
1 min readMar 6, 2025

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We’re excited to announce that Semaphore’s core CI/CD platform is officially open source. Now, you can explore, tweak, and contribute to the same production-grade code that’s powered your builds and deployments — all under the Apache 2.0 license.

Find the GitHub repo here:

semaphoreio/ semaphore

We built Semaphore with real-world developers in mind. Over the years, many of you have faced the frustrations of opaque pipelines and vendor lock-in. By opening our code, we’re handing over the keys so you can better understand how everything works, fix issues, and even add new features.

The open-source release brings you the same robust pipeline engine and workflow builder that handles millions of jobs every day. Semaphore is available in three flavors:

  • Semaphore Cloud for those who want a hassle-free, fully managed service
  • Semaphore Community Edition for anyone who loves to roll up their sleeves and dive into the code
  • Semaphore Enterprise for on-prem setups with additional enterprise features and support

What’s next?

  • Contributions are open and very welcome, please read our contribution guide if you’re interested in participating.
  • Head over to the installation guide to learn how to install the Community Edition in your hardware.

We invite you to head over to our GitHub repository, join the conversation on Discord, and voice your ideas. Let’s build a better CI/CD ecosystem together — one commit at a time.

Happy coding!

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Semaphore
Semaphore

Written by Semaphore

Supporting developers with insights and tutorials on delivering good software. · https://semaphore.io

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