cdnjs is a free distributed JS library delivery service.
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.
ipapi.co is a web analytics provider with IP address lookup and location API.
ipify is a service which provide public IP address API, IP geolocation API, VPN and Proxy detection API products.
JSDelivr is a free public CDN for open-source projects. It can serve web files directly from the npm registry and GitHub repositories without any configuration.
Open Graph is a protocol that is used to integrate any web page into the social graph.
React is an open-source JavaScript library for building user interfaces or UI components.
reCAPTCHA is a free service from Google that helps protect websites from spam and abuse.