Google Tag Manager is a tag management system (TMS) that allows you to quickly and easily update measurement codes and related code fragments collectively known as tags on your website or mobile app.
Gravitec is a push notification tool.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Priority Hints exposes a mechanism for developers to signal a relative priority for browsers to consider when fetching resources.
SpeedCurve is a front-end performance monitoring service.
Teads is a technology provider that sells ads on publisher websites.
Varnish is a reverse caching proxy.