Toad is a software application from Quest Software used for development and administration of various relational databases using SQL.
Toad supports the following databases: Oracle Database, Microsoft SQL Server, IBM DB2, and MySQL.Toad runs on all 32-bit Windows platforms, including Windows 95, 98, NT, 2000, XP, and Vista. Hardware requirements are such that if you can run the operating system, Toad will probably run. For backend connectivity you will need Oracle 32-bit SQL*Net and Oracle version 7.3.4 or later.
Toad can view the Oracle Dictionary, tables, indexes, stored procedures, and do various other tasks, through multi-tabbed browsers.
Toad does not support any non-Microsoft environment. Quest does have an open source platform independent tool offering some of Toad's basic functionality, called TOra.
Toad is available in both commercial and freeware versions. The freeware version requires reinstalling every 60 days. Toad for MySQL is freeware and never expires.