Sikuli - Sikuli Script
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.
UI.Vision - Modern open-source task and test automation tool and Selenium IDE.
Buildbot - Python-based continuous integration testing framework