Concourse - Concourse is a CI tool that treats pipelines as first class objects and containerizes every step along the way. (Demo, Source Code) Apache-2.0Go
drone - Drone is a Continuous Delivery platform built on Docker, written in Go. (Source Code) Apache-2.0Go
Factor - Programmatically define and run workflows to connect configuration management, source code management, build, continuous integration, continuous deployment and communication tools. (Source Code) MITRuby
Terrateam - GitOps-first automation platform for Terraform and OpenTofu workflows with support for self-hosted runners. (Source Code) MPL-2.0OCaml/Docker
werf - Open Source CI/CD tool for building Docker images and deploying to Kubernetes via GitOps. (Source Code) Apache-2.0Go
Woodpecker - Community fork of Drone that uses Docker containers. (Source Code) Apache-2.0Go