Toad is an industry-standard tool for application development. Using Toad, developers can build, test, and debug PL/SQL packages, procedures, triggers, and functions. TOAD users can create and edit database objects such as tables, views, indexes, constraints, and users. TOAD.
Open DBDiff is an open source database schema comparison tool for SQL Server 2005+. It reports differences between two database schemas and provides a synchronization script to upgrade a database from one to the other.
A powerful SQL tool to transform or reverse complex queries (generated by OBIEE, Microstrategy, Cognos, Hyperion, Pentaho ...) into diagrams to ease visualization and analysis. A graphical query builder that permits to create complex SQL queries easily.