Here you find some useful developer tools which can be widely used to work with various databases and JDBC drivers:

Database tools:

DBVisualizer - is a feature rich, intuitive and cross platform database tool for developers and DBA's providing a single powerful interface for a variety of databases. DbVisualizer supports simultaneous database connections, it lets you explore and manage database objects, execute SQL queries, visualize information and a lot more.  See more information here.

SQL Uniform - is a database client, graphical user interface (GUI), a helper application to relational databases of various types regarding query, maintenance, data comparison, export (convert), import. See more information here.

Reporting tool:

Scribe Report Generator - is based on graphical programming concepts, allowing the users to define the process of retrieving data from the database tables, performing the necessary calculations, creating pie, bar and line charts, and formatting data for printing. Scribe performs all these tasks in the form of an executable graphical flowchart. Printing is done through WYSIWYG page layout forms (print templates). See more information here.