Cloud bees - Jenkins
Jenkins is an open source automation server which enables developers around the world to reliably build, test, and deploy their software.
Jenkins, originally founded in 2006 as "Hudson", is one of the leading automation servers available. Using an extensible, plugin-based architecture developers have created hundreds of plugins to adapt Jenkins to a multitude of build, test, and deployment automation workloads.
In 2015, Jenkins surpassed 100,000 known installations making it the most widely deployed automation server.