Atlassian Jira Issue Collector is a tool used to download a list of websites using with email addresses, phone numbers and LinkedIn profiles.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
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.
Ruby on Rails is a server-side web application framework written in Ruby under the MIT License.
Varnish is a reverse caching proxy.