Firebase is a Google-backed application development software that enables developers to develop iOS, Android and Web apps.
Google Analytics is a free web analytics service that tracks and reports website traffic.
HTTP Strict Transport Security (HSTS) informs browsers that the site should only be accessed using HTTPS.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
ipapi.co is a web analytics provider with IP address lookup and location API.
Twitter is a 'microblogging' system that allows you to send and receive short posts called tweets.