The data pipeline is based on Apache Ant (open source). Its main configuration is XML-based.
It might count deprecated as a build tool, but it still shines as a process execution framework with rich standard features, like:
Process execution (command line, Java, etc.)
File operations
XML operations (XSLT execution, schema validation, etc)
Beyond the standard features, also 3rd party tools integrate with Apache Ant, like:
DBUnit, the tool we used to export data from relational databases
An archiving system we used during our projects