hello, i want to know is there any extensions which must be downloaded for using git commands ?
i saw that version 14 has git functionality(git extensions), but i cant find git commands on my files browser in pl sq developer

https://www.allroundautomations.com/products/pl-sql-developer/features/new-features-pl-sql-14-0/

You can use Git Extensions (https://gitextensions.github.io) or TortoiseGit (https://tortoisegit.org).

For integration you first need to configure Git through Preferences > Files > Version Control. If you enable Git, and if you have installed Git Extensions or TortoiseGit, configuration should be automatic.

The version control configuration is described in chapter 22.27 in the User's Guide, with TortoiseGit as a client GUI example. Chapter 16 describes how to use the integration.