It is important to note that PL/SQL Developer is a commercial software product by Allround Automations. Using or distributing "free" license keys found online often involves risks like malware, security vulnerabilities, or legal issues for businesses [1, 2].
The official free graphical tool from Oracle. It supports almost all features a PL/SQL developer needs, including debugging and worksheet execution [3]. DBeaver (Community Edition): Pl Sql Developer 14 License Key Free
If you need a permanent, free tool for Oracle database development, these industry-standard options are completely free to use: Oracle SQL Developer: It is important to note that PL/SQL Developer