JasperReports is a powerful open source Java reporting tool that has the ability to deliver rich content onto the screen, to the printer or into PDF, HTML, XLS, CSV and XML files. It is entirely written in Java and can be used in a variety of Java enabled applications, including J2EE or Web applications, to generate dynamic content.

JBoss Enterprise Application Platform is the market leading platform for innovative and scalable Java applications. Integrated, simplified, and delivered by the leader in enterprise open source software, it includes leading open source technologies for building, deploying, and hosting enterprise Java applications and services.

PostgreSQL is a powerful, open source relational database system. It has more than 15 years of active development and a proven architecture that has earned it a strong reputation for reliability, data integrity, and correctness. It runs on all major operating systems.

HSQLDB is the leading SQL relational database engine written in Java. It offers a small, fast database engine which offers both in-memory and disk-based tables and supports embedded and server modes. The product is currently being used as a database and persistence engine in many Open Source Software projects and even in commercial projects and products. In it's current version it is extremely stable and reliable. It is best known for its small size, ability to execute completely in memory, its flexibility and speed.