Continuous Integration GitHub Repositories (2026) · Open Source Tools

Automation engine to build, test and ship any codebase. Runs locally, in CI, or directly in the cloud

Harness Open Source is an end-to-end developer platform with Source Control Management, CI/CD Pipelines, Hosted Developer Environments, and Artifact Registries.

Jenkins automation server

The Buildkite Agent is an open-source toolkit written in Go for securely running build jobs on any device or network

A solution for implementing efficient and consistent software delivery to Kubernetes facilitating best practices.

Flagsmith is an open-source feature flag platform with remote config, experimentation, and self-hosted or cloud deployment options.

:cake: Cake (C# Make) is a cross platform build automation system.

Command line driven CI frontend and development task automation tool.

GoCD - Continuous Delivery server main repository

Conformance test suite for OpenShift

Concourse is a container-based automation system written in Go. It's mostly used for CI/CD.

Python-based continuous integration testing framework; your pull requests are more than welcome!

Enterprise-Grade Continuous Delivery & DevOps Automation Open Source Platform

Espressif 32: development platform for PlatformIO

Jenkins Build Monitor Plugin

Use CircleCI from the command line

The JMeter Maven Plugin

CI at Scale

Save 30-50%+ of CI time without any effort or cost. Use Magic Nix Cache, a totally free and zero-configuration binary cache for Nix on GitHub Actions.

A powerful Python framework for writing and running portable regression tests and benchmarks for HPC systems.