Maven from Apache
Maven is an open source tool for project management and build management. It is based on XML technology called Project Object Model (POM) which defines a project activities including build. Maven automates build scripts normally written in Ant.
Some of the features offered by Maven are support for multiple projects with inheritance, pre-configured repository for open source projects already released, automated release management, extensible using plugins and is based on the ’simplification by convention’ principle.