MongOz is a MongoDB client, intended to be multi-platform. It's written in Java as backend (to handle the MongoDB connections) and Javascript / HTML5 / CSS3 as frontend, in order to have a modern interface, besides being easy to change as desired.
Currently dead. Web-based SQL client that can connect to any number of databases using JDBC. Provides a clean, simple and fast interface using HTML and Javascript to make it very easy to run common SQL queries. Faster than your average Swing-based client
SDBC is a MS Access-like database client based on Java swing ui, able to connect to both local and network DBMS. It uses Derby for file-based database and JDBC for SQl-based DBMS.