XAMPP is a completely free, easy to install Apache distribution containing MariaDB, PHP, and Perl. The XAMPP open source package has been set up to be incredibly easy to install and to use.
— https://www.apachefriends.org/index.html
The Perl folder contains files needed to run server-side code written in Perl.
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solved What is the use of perl folder in xampp why it is included in xampp? [closed]