Universal SQL Editor
Universal SQL Editor is a tool that allows you to connect any ODBC compliant databases, such as Oracle, DB2, SQL Server, Sybase, etc. and edit SQL queries and scripts with code completion, syntax highlighting, SQL formatting, plus other useful features that allow you to work more efficiently.
UDB Workbench (formerly DB Workbench)
UDB Workbench includes most of the features of Universal SQL Editor, in addition, it allows you to load database schemas from file, compare and synchronize database schemas, but it works with DB2 UDB databases only.