TOra a Toolkit for Oracle which aims to help the DBA or developer of database applications, can manage your databases, it is an open-source multi-platform database management GUI that supports accessing most of the common database platforms in use, includes support for MySQL and Postgres, as well as limited support for any target that can be accessed through Qt's ODBC support. TOra has been built for various Linux distributions, Mac OS X, MS Windows, and UNIX platforms.

In addition to regular query and data browsing functionality, it includes several additional tools useful for database administrators and developers - which aims to help the DBA or developer of database application. Features PL/SQL debugger, SQL worksheet with syntax highlighting, DB browser and a comprehensive set of DBA tools.

Features:
1. Handles multiple connections.
2. Asynchronous database communication. UI mostly responsive when accessing database.
3. Requires no installation on the database side to be fully functional.
4. Server overview.
5. Tuning charts.
6. I/O by tablespace & file.
7. Performance indicators.
8. Raw server statistics.
9. Parameter editor (P-file editor).
10. Security manager.
11. Storage manager with object & extent viewer.
12. Session manager.
13. Rollback manager with snapshot too old detection.
14. SGA & long operations trace.
15. Current session information.
16. Statistics manager with parallel analysis.
17. DBMS alert tool.
18. Invalid object browser.
19. SQL output viewer.
20. Database & schema comparison and server.
21. Extract schema objects to SQL scripts.
22. Easily extendible.
23. Ability to add support for new or older Oracle versions without programming.
24. Well documented plugin API (Only Linux version).
25. SQL template help with PL/SQL functions and optimizer hints.
26. Full UNICODE support.
27. Printing of any list, text or chart.
28. Cross platform support. Known to work on Linux, Windows and Solaris.

Advanced SQL worksheet.
1. Code completion.
2. Explain execution plan.
3. Execution statistics.
4. SQL syntax highlighting.
5. Quick menu for often used custom SQL.
6. Parse error location indication.
7. Chart visualization of result.
8. PL/SQL block parsing.
9. Schema browser.
10. Table & view editing.
11. References & dependencies.
12. Tab & tree based browsing.
13. Object & data filtering.
14. PL/SQL editor & debugger.
15. Breakpoints.
16. Variable watches.
17. Line by line stepping.
18. Debugger SQL output viewing.
19. Syntax structure tree parsing.

The license of this software is Free, you can free download and free use this database management software.