Please note that SQL Workbench/J has no relation to the product MySQL Workbench which is maintained and owned by Oracle.
If you are looking for MySQL Workbench support please contact Oracle.

SQL Workbench/J mainly uses standard Java/JDBC calls to the database and thus should work against any DBMS that has a JDBC driver. But not all features might work correctly with unknown databases, especially if the JDBC driver only implements a small subset of the JDBC API.

SQL Workbench/J has been specifically tested with the following DBMS:

• PostgreSQL (8.4 or later)(Download JDBC driver)
• HSQLDB
• H2 Database Engine
• Firebird SQL (Download JDBC driver)
• Apache Derby
• Oracle (10g or later)(Download JDBC driver)
• Microsoft SQL Server (Download JDBC driver)
• IBM DB2
• Pivotal Greenplum
• MySQL (Download JDBC Driver)

The following DBMS have been reported to work with SQL Workbench/J but have not been tested

• HP Vertica (Download JDBC driver)
• MariaDB (Download JDBC Driver)
• Cubrid
• Informix
• Ingres
• SQLite (with SQLiteJDBC)
• Teradata (Download JDBC driver)