Open source ci projects

Every project in the registry tagged ci, ranked by real GitHub adoption.

projects 14 combined stars ★ 144K refresh nightly
01 Harness ★ 38K

End-to-end open source software delivery platform

last push34 hours ago languageGo licenseApache-2.0
02 promptfoo ★ 25K

Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simpl

last push4 hours ago languageTypeScript licenseMIT
03 webhook ★ 12K

webhook is a lightweight incoming webhook server to run shell commands

last push13 days ago languageGo licenseMIT
04 earthly ★ 12K

Super simple build framework with fast, repeatable builds and an instantly familiar syntax – like Dockerfile and Makefile had a baby.

last push11 months ago languageGo licenseMPL-2.0
05 spug ★ 11K

Spug is a lightweight agent-free automatic operation and maintenance platform designed for small and medium-sized enterprises. It integrates host management, ho

last pushyesterday languageJavaScript licenseAGPL-3.0
06 reviewdog ★ 9.6K

🐶 Automated code review tool integrated with any code analysis tools regardless of programming language

last push20 hours ago languageGo licenseMIT
07 Woodpecker CI ★ 7.9K

Simple yet powerful CI/CD engine with great extensibility

last push15 hours ago languageGo licenseApache-2.0
08 gocd ★ 7.4K

GoCD - Continuous Delivery server main repository

last push17 hours ago languageJava licenseApache-2.0
09 tfsec ★ 7.0K

Tfsec is now part of Trivy

last push6 months ago languageGo licenseMIT
10 Flagsmith ★ 6.6K

Feature flags and remote config for rapid deployment

last push9 hours ago languagePython licenseBSD-3-Clause
11 database-lab-engine ★ 2.7K

DBLab enables 🖖 database branching and ⚡️ thin cloning for any Postgres database and empowers DB testing in CI/CD. This optimizes database-related costs while

last push15 hours ago languageGo licenseApache-2.0
12 devops-basics ★ 1.9K

🚀 Practical and document place for DevOps toolchain

last push5 days ago languageShell licenseApache-2.0
13 Semaphore ★ 1.6K

Open source CI/CD platform that's faster and costs less

last push4 hours ago languageElixir license
14 zeabur ★ 681

A platform that helps you deploy services with one click.

last push6 hours ago languageHTML licenseMPL-2.0

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Frequently asked questions

How many open source ci projects are there?

This registry tracks 14 projects tagged ci, with 144,256 GitHub stars between them. The most-adopted is Harness at 38,378 stars.

Are these ci projects free to use?

Yes — 13 of the 14 carry an explicit open-source licence across 5 distinct licences, so there is no licence fee. Where a project also sells a hosted or enterprise version, the self-hosted path remains free.

Which ci project should I choose?

The list above is ranked by GitHub stars, but stars measure attention rather than fit. Check three things on each card: the licence (permissive versus copyleft), the language it is written in, and the last-push date — a high-star project that has not been pushed in a year is a liability.

Are these ci projects still maintained?

12 of the 14 were pushed in the last 90 days, and every card shows its exact last-push date so you can see the rest. Sort your shortlist by that date before committing to a migration.