Oracle SQL Developer is a free integrated development environment provided by Oracle Corporation for working with Oracle databases. It allows users to browse database objects, run SQL queries, and manage database tasks efficiently. The tool supports various database operations, making it easier for developers and database administrators to interact with their data. With a user-friendly interface, Oracle SQL Developer offers features like code editing, debugging, and reporting. It also supports data modeling and migration, enabling users to convert data from other database systems into Oracle format. This versatility makes it a valuable tool for anyone working with Oracle databases.