The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.
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A utility-first CSS framework for rapid UI development.
Prettier is an opinionated code formatter.
The zero configuration build tool for the web. 📦🚀
Fast, expressive styling for React. Server components, client components, streaming SSR, React Native—one API.
An extremely fast bundler for the web
A collection of CSS3 powered hover effects to be applied to links, buttons, logos, SVG, featured images and so on. Easily apply to your own elements, modify or just use for inspiration. Available in CSS, Sass, and LESS.
:flags: A curated collection of all country flags in SVG — plus the CSS for easier integration
jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.
Spectre.css - A Lightweight, Responsive and Modern CSS Framework
The official source for MDN Web Docs content. Home to over 14,000 pages of documentation about HTML, CSS, JS, HTTP, Web APIs, and more.
700+ Pure CSS, SVG & Figma UI Icons, 6000+ glyphs, patterns, colors and layouts.
A CSS only tooltip library for your lovely websites.
An extremely fast CSS parser, transformer, bundler, and minifier written in Rust.
A best-practices CSS foundation
SpeedTest by OpenSpeedTest™ is a Free and Open-Source HTML5 Network Performance Estimation Tool Written in Vanilla Javascript and only uses built-in Web APIs like XMLHttpRequest (XHR), HTML, CSS, JS, & SVG. No Third-Party frameworks or libraries are Required. Started in 2011 and moved to OpenSpeedTest.com dedicated Project/Domain Name in 2013.
A JavaScript API for drawing unconventional text effects on the web.
:cloud: The SCSS framework for the modern web.
Build all of your apps using what you already know and love ❤️
🔥 A next-generation CLI tool that makes it easy to create amazing web applications with Go on the backend, using htmx, hyperscript or Alpine.js, and the most popular CSS frameworks on the frontend.
:rocket: An open source alternative to searx which provides a modern-looking :sparkles:, lightning-fast :zap:, privacy respecting :disguised_face:, secure :lock: meta search engine
:station: - friendly web compiler
A CSS framework that's lightweight and easy-to-use. Give up the bloat. Stop tripping over your classes. Be Concise.
AgnosticUI Local (v2) is a CLI-based UI component library that copies components directly into your project. Works with AI tools, agent-driven UIs, and prompt-ready workflows.