cdnjs is a free distributed JS library delivery service.
Fly is a platform for running full stack apps and databases.
jQuery is a JavaScript library which is a free, open-source software designed to simplify HTML DOM tree traversal and manipulation, as well as event handling, CSS animation, and Ajax.
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.
Leaflet is the open-source JavaScript library for mobile-friendly interactive maps.
MapLibre GL JS is an open-source library for publishing maps on your websites.
Unpkg is a content delivery network for everything on npm.