Oracle Maestro (GUI)
Oracle Maestro is a graphical software for Oracle administration and development. Oracle Maestro has a tabbed MDI interface and supports multiple database connections. This GUI tool was first released by the SQL Maestro Group in December 2006 as part of SQL Maestro product line. There are also versions for MySQL, PostgreSQL, Microsoft SQL Server, SQL Anywhere, IBM DB2, SQLite and Firebird.
 Main Features
- Support for all the Oracle versions from 8i to 11g
- Database Designer
- PL/SQL Debugger
- Visual Query Builder with support for subqueries and UNIONS
- Data export/import modules
- BLOB Viewer/Editor
 Freeware version
One of the SQL Maestro products, AnySQL Maestro, is a freeware tool that works with any data source. It allows users to explore and interact with the Oracle databases via OLE DB provider.