Apache is a free and open-source cross-platform web server software.
Bugsnag is a cross-platform error monitoring, reporting, and resolution software.
Websites that have a shopping cart or checkout page, either using a known ecommerce platform or a custom solution.
Google PageSpeed is a family of tools designed to help websites performance optimisations.
OneSignal is a customer engagement messaging solution.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Polyfill is a service which accepts a request for a set of browser features and returns only the polyfills that are needed by the requesting browser.
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.
Varnish is a reverse caching proxy.