Embedly is a service that allows developers to convert URLs into rich previews and embeddable content.
Fastly is a cloud computing services provider. Fastly's cloud platform provides a content delivery network, Internet security services, load balancing, and video & streaming services.
GitHub Pages is a static site hosting service.
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.
Open Graph is a protocol that is used to integrate any web page into the social graph.
UIKit is the framework used for developing iOS applications.
Unpkg is a content delivery network for everything on npm.
Varnish is a reverse caching proxy.