Glide.js is a dependency-free JavaScript ES6 slider and carousel.
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.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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.
RequireJS is a JavaScript library and file loader which manages the dependencies between JavaScript files and in modular programming.
SnapWidget is a set of interactive Instagram, Twitter and 500px widgets.
Typekit is an online service which offers a subscription library of fonts.
Unpkg is a content delivery network for everything on npm.
Vimeo is a video hosting, sharing and services platform. Vimeo operation an ad-free basis by providing subscription plans.