GoCD is an open source continuous delivery server created by ThoughtWorks. GoCD offers businesses a first-class build and deployment engine for complete control and visibility. It was designed for continuous delivery and the concepts essential to this practice are built in at the core.
Jenkins is an award-winning application that monitors executions of repeated jobs, such as building a software project or jobs run by cron.
Easily sync your GitHub projects with Travis CI and you'll be testing your code in minutes. Travis CI for private repositories has plans for every size project. With Travis CI testing your open source project is 100% free.