Apache is a free and open-source cross-platform web server software.
Drupal is a free and open-source web content management framework.
Firebase is a Google-backed application development software that enables developers to develop iOS, Android and Web apps.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
Progressive Web Apps (PWAs) are web apps built and enhanced with modern APIs to deliver enhanced capabilities, reliability, and installability while reaching anyone, anywhere, on any device, all with a single codebase.