Perl is a programming language suitable for writing simple scripts as well as complex applications — see https://www.perl.org.
Strawberry Perl is a perl environment for MS Windows containing all you need to run and develop perl applications. It is designed to be as close as possible to perl environment on UNIX systems.
Strawberry Perl is licensed under the same terms as the Perl 5 programming language system itself.
Terms of the Perl programming language system itself are:
a) the GNU General Public License as published by the Free
Software Foundation; either version 1, or (at your option) any
later version, or
b) the "Artistic License"