Embedly is a service that allows developers to convert URLs into rich previews and embeddable content.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Issuu is a digital discovery and publishing platform.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Squarespace Commerce is an ecommerce platform designed to facilitate the creation of websites and online stores, with domain registration and web hosting included.
Squarespace provides Software-as-a-Service (SaaS) for website building and hosting, and allows users to use pre-built website templates.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.
Typekit is an online service which offers a subscription library of fonts.