Hexo is a blog framework powered by Node.js.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
IPinfo is an IP address data provider.
Nginx is a web server that can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache.
Open Graph is a protocol that is used to integrate any web page into the social graph.
Unpkg is a content delivery network for everything on npm.