Bootstrap is a free and open-source CSS framework directed at responsive, mobile-first front-end web development. It contains CSS and JavaScript-based design templates for typography, forms, buttons, navigation, and other interface components.
Htmx is a JavaScript library for performing AJAX requests, triggering CSS transitions, and invoking WebSocket and server-sent events directly from HTML elements.
jQuery UI is a collection of GUI widgets, animated visual effects, and themes implemented with jQuery, Cascading Style Sheets, and HTML.
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.
Kong is an open-source API gateway and platform that acts as middleware between compute clients and the API-centric applications.
Modernizr is a JavaScript library that detects the features available in a user's browser.
Unpkg is a content delivery network for everything on npm.