Maven
Apache Maven is a Java-based tool for build automation and project management (in software development). It is centered around a Project Object Model (POM) described in a XML file that describes the project structure and its dependencies to other components and libraries. Maven provides pre-defined targets for source code compilation and packaging. It can automatically download referenced software libraries from an online repository. While theoretically Maven's open design allows for support of other programming languages, it is mainly used for Java development, where it has become widely-used both for Open Source projects as well as private development teams.