ApexSQL Version is a SQL Server Management Studio add-in which allows you to version control SQL databases and objects directly from inside SSMS. It integrates with all major source control systems. Supports SQL Server 2012.
Navicat for PostgreSQL Client GUI - is an excellent and easy-to-use graphical tool for PostgreSQL database administration. You can create and execute queries, functions with powerful SQL editor, and you can manage your data with our versatile data editing tools.
Navicat Oracle Manager is a graphical database management and development tools for Oracle. It is powerful and easy to use. It features an intuitive GUI and offers powerful visual tools to increase your productivity. It runs on Windows, Mac OS X and Linux.
Navicat (SQL Server administrator - a GUI Tool for SQL Server admin and Access to MS SQL, Excel to MS SQL conversion). Navicat is a set of graphical database management, reporting and monitoring tools for SQL Server database systems. Navicat is easy-to-use, powerful and supports HTTP and SSH for remote SQL Server connection. You can create a conceptual model from an existing database and graphically visualize and edit the structure of your database.