Calendly is an app for scheduling appointments, meetings, and events.
Framer is primarily a design and prototyping tool. It allows you to design interactive prototypes of websites and applications using production components and real data.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
Netlify providers hosting and server-less backend services for web applications and static websites.
Open Graph is a protocol that is used to integrate any web page into the social graph.
YouTube is a video sharing service where users can create their own profile, upload videos, watch, like and comment on other videos.