cdnjs is a free distributed JS library delivery service.
chroma.js is a small-ish zero-dependency JavaScript library for all kinds of color conversions and color scales.
Cloudflare is a web-infrastructure and website-security company, providing content-delivery-network services, DDoS mitigation, Internet security, and distributed domain-name-server services.
D3.js is a JavaScript library for producing dynamic, interactive data visualisations in web browsers.
GitHub Pages is a static site hosting service.
HTTP/3 is the third major version of the Hypertext Transfer Protocol used to exchange information on the World Wide Web.
Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.
SweetAlert is a JavaScript library that provides alternative alert and modal dialog boxes for web applications, with customisable features, aiming to improve the user interface of the default browser dialogs.
Unpkg is a content delivery network for everything on npm.