cdnjs is a free distributed JS library delivery service.
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.
Ghost is a powerful app for new-media creators to publish, share, and grow a business around their content.
GitHub Pages is a static site hosting service.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Prism is an extensible syntax highlighter.
Varnish is a reverse caching proxy.