MySQL Workbench is a tool for managing and modeling MySQL databases. With its help, you can edit the configuration of the server and its components, as well as design and create diagrams (visual representations of tables, views, etc.) of new databases, perform existing documentation and provide support for migration to MySQL.
Database .NET is a free portable tool for managing various DBMSs, with support for Access, Excel, Firebird, MySQL, SQL Server, SQL Azure, SQLCE, SQLite, PostgreSQL, Oracle, DB2, OLEDB, ODBC and OData. There are backup features
pgAdmin is an uncomplicated and very useful tool for managing PostgreSQL databases. It enables comprehensive administration of SZBD content, constituting an excellent alternative to the psql console mechanism.
REPCoder is a utility program for designing and servicing database reports. It is intended mainly for database application programmers. It can also be successfully used by people who create reports independently.
My Visual DataBase is a shell for creating and developing various databases. This tool is convenient, understandable, not overloaded with specific settings, and will help create a full-fledged Windows database application even without programming skills.