DiffKit evolves the traditional *nix "diff" utility for the enterprise. It is an application, and a framework, for comparing two tables of data, field-by-field. The tables can come from any of a number of sources, such as an RDBMS or CSV file, and DiffKit is able to mix different kinds of sources in the same diff operation. DiffKit is highly customizable with respect to the sources of tabular data, the details of the comparison, and the characteristics of the output (diff report).
Domain Object Explorer is a desktop application that auto-generates the user interface for your JPA / EJB3 entity beans.
Moved to : [https://github.com/jGauravGupta/JPAModeler] JPA Modeler allows the developers to design java persistence application business model and automates Java code generation(JPA 2.0).