Symfony is a web framework written in PHP and a set of reusable PHP components / libraries.
Symfony was released on October 18, 2005 under the MIT license.
APPNET OS uses the Twig Template Engine from Symfony and thus offers a free choice of how to use views.
By integrating Symfony in the APPNET OS Core, all functions of the framework can be used.
More information about Symfony can be found here:
https://symfony.com/