Ivy Build & Dependency Manager‏

Ivy is a tool for managing (recording, tracking, resolving and reporting) project dependencies. It is characterized by the following:
1- flexibility and configurability - Ivy is essentially process agnostic and is not tied to any methodology or structure. Instead it provides the necessary flexibility and configurability to be adapted to a broad range of dependency management and build processes.
2- tight integration with Apache Ant - while available as a standalone tool, Ivy works particularly well with Apache Ant providing a number of powerful Ant tasks ranging from dependency resolution to dependency reporting and publication...
http://ant.apache.org/ivy/index.html