Toad for SQL Server provides a development UI that improves productivity

TOADŽ empowers developers and DBAs to be more productive by providing an intuitive graphical user interface to Oracle. TOAD is a powerful, low-overhead tool that makes PL/SQL development faster and easier and simplifies database administration.

Toad for MySQL leverages Quest Software's database expertise to empower MySQL developers and administrators, of varying skill levels, to rapidly create and execute queries, automate database object management and develop SQL code more efficiently.

ToadŽ for DB2 UDB is a database development solution that provides productivity features for rapidly creating and executing queries, automating database object management, developing SQL code, and instant access to DB2 expertise.

The FREE SimpleSQL Backup utility makes it easy for anyone to perform an immediate backup of a SQL Server database.

Foxy SQL Free allows you to execute SQL commands and queries against any database. Connections: Native, ODBC, ADO. Supported db: Oracle, MS SQL, IB, DB2, MySQL, PostgreSQL, Firebird, Sybase ASE... Features: tabular displaying of SQL queries and more.

SQL*XL integrates external database access into Excel

Free SQL Editor for Oracle. Features - colored syntax, multi-threaded configuration, explain plan, reading DBMS_OUTPUT stream, error positioning, execution SQL and PL/SQL blocks, execution single and multiple SQL statement (scripts).