Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
Hexo is a blog framework powered by Node.js.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
MathJax is a cross-browser JavaScript library that displays mathematical notation in web browsers, using MathML, LaTeX and ASCIIMathML markup.
Moment.js is a free and open-source JavaScript library that removes the need to use the native JavaScript Date object directly.
Open Graph is a protocol that is used to integrate any web page into the social graph.