gtm-server-side-magento-module by stape-io

This module changes the default Magento 2 404 page given when a product is disabled and redirects it to the first category it belongs to. Maintained by fransyrcc on GitHub, where it has earned 14 stars from the community.

The SimpleData module simplifies calling Magento data structures. Maintained by markshust on GitHub, where it has earned 94 stars from the community.

Magento 2 Allegro Integration module. Maintained by macopedia on GitHub, where it has earned 23 stars from the community.