DbVisualizer is a cross-platform database tool for all major relational databases. DbVisualizer enables simultaneous connections to many different databases through JDBC drivers. Just point and click to browse the database structure, view detailed characteristics of database objects or edit table data graphically.
db4o (database for objects) is the open source object database, native to Java.
Free software, available under the GPL and under a commercial license.
Persist any object with one line of code. Other features are object-oriented replication, Native Queries, automatic schema recognition, 350K footprint.
Ideal for embedded use, e.g., in software running on mobile or medical devices, in packaged software, and for real-time systems.
StelsCSV is a JDBC driver that allows to perform SQL queries and other JDBC operations on text files (CSV, DSV, tab-separated, fixed length etc). Using this driver, you can easily create a simple database consisting of plain text files. Also, the driver can be used for writing data importing programs and migration tools.
The UnityJDBC driver can integrate and query any number of JDBC-accessible data sources (including Oracle, SQL Server, MySQL, and Postgres) in a single SQL query. UnityJDBC contains a built-in database engine and optimizer that can be used separately from the integration system. It also contains a new, faster join algorithm and syntax for matching/merging data beyond simple joins. It runs on any Java-enabled platform.
Query, edit, browse, and manage databases from one tool. RazorSQL includes a built in relational database. Drivers are included for all major databases. Connect to other databases via JDBC or ODBC. Run SQL scripts; do SQL programming; visually edit, create, alter, drop, and view database objects; visually build queries; import and export data; and browse databases with the navigator. RazorSQL supports 20 programming languages.
tmWorks R-View is a light and functional web-based front-end to any database you have JDBC drivers to. Our tool allows any raw SQL code execution - it's limited only by SQL supported by the database you are using.