* [Abstruse CI](https://github.com/bleenco/abstruse) - Open Source CI/CD Platform built on Docker.
* [Buildbot](http://buildbot.net/) - Python-based toolkit for continuous integration.
* [CapsuleCD](https://github.com/AnalogJ/capsulecd) - CD script for automating package/library releases (npm, cookbooks, gems, pip, jars, etc).
* [concourse](http://concourse.ci/) - A modern tool to gain visibility on the CI/CD pipeline. The flexible, declarative DSL is easy to learn and powerful to use.