To do so, you need to go to developer.oracle.com. Then, click on Downloads > Database. You then have to scroll down to reach Developers Tools and then click on SQL Developer.

Oracle has announced the general availability of Oracle SQL Developer Release 1.2 that features new capabilities to ease the migration and consolidation of third-party databases onto Oracle Database ...

To install Oracle Database on Windows for free, download Oracle database files, install Oracle, and then set up Oracle using this guide, ...