Jenkins is a open source continuous integration tool written in Java.
It is a server-based system running in a servlet container such as Apache Tomcat. It supports SCM tools including AccuRev, CVS, Subversion, Git, Mercurial, Perforce, Clearcase and RTC, and can execute Apache Ant and Apache Maven based projects as well as arbitrary shell scripts and Windows batch commands.
Jenkins has provided the flexibility of accessing it through code by exposing REST based API.
