JCDatabase is an alternative to JDBC with the following advantages: (1) JCDatabase does not require you to run a database server or configure your system to provide access to a local database, (2) JCDatabase can be deployed either on a server for access by many users or as part of a traditional client-side application using direct file access and (3) JCDatabase has the actual database built into it, leveraging the standard Java file access methods.

Daffodil DB is a Java RDBMS, SQL-99 specification compliant, capable, reliable, scalable, high-performance, embeddable, lightweight java-based relational database engine (RDBMS). Daffodil DB supports almost all constructs of SQL 99 (including triggers, views, constraints, UDT, stored procedures etc),supports distributed transactions (XA), provides complete JDBC 3.0 (Java Database Connectivity) driver and can run in embedded or server mode. Daffodil DB includes Daffodil DB Browser, a GUI based database management tool.

Axion is a small, fast, SQL and JDBC compliant relational database system written in and for the Java programming language.

DIG allows end users to do sophisticated ad-hoc queries and data analysis. No SQL or database knowledge is required. DIG can be installed and used without help from IT. Data can be imported from and exported to text files, Excel, Access, or any database. What sets DIG apart from other query tools is its power, flexibility, and ease of use for data analysis. DIG lets end users get answers from data that normally require a programmer or DBA.

JoraclePro™ is a powerful, 100% pure Java Oracle PL/SQL editing/debugging tool. Including PL/SQL syntax colorization, database objects browser, one-click PL/SQL programs(packages, procedures, functions) debugging/testing script generation, and a sqlplus console with saved PL/SQL history.