Apache Archiva - Apache Archiva is an extensible repository management software.
MySQL - The world's most popular open source database
Apache Tika - Apache Tika toolkit detects and extracts metadata and text from different file types.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
Apache Ambari - Ambari is aimed at making Hadoop management simpler by developing software for provisioning, managing, and monitoring Hadoop clusters.
SQLite - SQLite Home Page