Open-source css-framework software
806 open-source libraries, tools and applications tagged css-framework, ranked by how closely css-framework is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
806 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| spicetify/spicetify-themes A community-maintained collection of CSS themes for customizing the Spotify desktop client via the Spicetify CLI. It includes multiple them… | 75 | 6087 | active |
| skeletonlabs/skeleton Skeleton is an adaptive design system built on Tailwind CSS, providing themes, design tokens, utility classes, and turnkey UI components fo… | 92 | 6074 | active |
| Material Kit Material Kit is a free, MIT-licensed Bootstrap 5 UI Kit from Creative Tim inspired by Google's Material Design, offering 60+ styled compone… | 23 | 5918 | active |
| Arco Design Arco Design is a comprehensive React UI components library based on the Arco Design system, offering 60+ TypeScript-written components with… | 91 | 5711 | active |
| dcastil/tailwind-merge A TypeScript utility function that merges Tailwind CSS class strings while resolving style conflicts, keeping the last conflicting class. I… | 93 | 5695 | stable |
| knadh/oat Oat is an ultra-lightweight (~10KB min+gz), zero-dependency UI component library built on semantic HTML, CSS, and vanilla JS WebComponents.… | 84 | 5534 | active |
| jerrykuku/luci-theme-argon Argon is a clean, modern theme for the OpenWrt LuCI web administration interface, built with Less. It supports light/dark mode switching, c… | 95 | 5533 | active |
| argyleink/open-props Open Props is a collection of 500+ CSS custom properties (design tokens) covering colors, gradients, shadows, typography, easings, animatio… | 63 | 5531 | active |
| serafimcloud/21st 21st.dev is an open-source community registry and marketplace of React UI components built with Tailwind CSS and Radix UI, following shadcn… | 30 | 5477 | active |
| system-ui/theme-ui Theme UI is a React library for building themeable user interfaces based on constraint-based design principles. It provides an sx prop and … | 67 | 5399 | active |
| Jakubantalik/transitions.dev Transitions.dev is an interactive collection of reusable, copy-ready CSS transition snippets for common web UI interaction patterns (modals… | 60 | 5391 | active |
| gluestack-ui gluestack-ui is a copy-pasteable React and React Native component library styled with Tailwind CSS (NativeWind), offering 30+ customizable,… | 86 | 5327 | active |
| csstools/sanitize.css sanitize.css is a CSS library providing consistent, cross-browser default styling of HTML elements, developed alongside normalize.css. It w… | 52 | 5311 | stable |
| iview/iview iView is a high-quality UI component toolkit built on Vue.js 2.0, offering dozens of ready-made components with a friendly API and extensiv… | 23 | 23742 | maintenance |
| andybrewer/mvp MVP.css is a minimalist classless CSS stylesheet that styles semantic HTML elements out of the box, with no class names or framework conven… | 84 | 5128 | active |
| readthedocs/sphinx_rtd_theme The official Read the Docs Sphinx theme, a Python package providing a responsive HTML theme for Sphinx documentation projects. It is highly… | 57 | 5091 | stable |
| Simple.css Simple.css is a lightweight, mostly classless CSS framework that makes semantic HTML look good out of the box. At around 10KB minified, it … | 68 | 5020 | active |
| unovue/inspira-ui Inspira UI is a curated collection of beautifully designed, reusable Vue and Nuxt components inspired by Aceternity UI and Magic UI. Rather… | 66 | 5010 | active |
| dotnetcore/BootstrapBlazor Bootstrap Blazor is an enterprise-level UI component library for Blazor, built on top of Bootstrap styling. It provides a rich set of Razor… | 95 | 4937 | stable |
| nostalgic-css/NES.css NES.css is a CSS framework that styles web components in a NES/Famicom 8-bit retro aesthetic. It provides prebuilt styled components (butto… | 23 | 21835 | maintenance |
| jd-opensource/taro-ui Taro UI is a multi-platform UI component library built on the Taro framework, offering a rich set of React-based components. A single set o… | 97 | 4730 | active |
| Mosaic Lite A free, open-source landing page template built with React, Next.js, and Tailwind CSS, created by Cruip. It provides a professional, ready-… | 44 | 4708 | active |
| puikinsh/Adminator-admin-dashboard Adminator is a free, MIT-licensed admin dashboard template built with vanilla JavaScript, HTML, and a token-driven CSS-variable design syst… | 93 | 4660 | active |
| NativeBase NativeBase is a mobile-first, accessible, utility-first component library for React Native and Web that provides ~40 themeable components f… | 48 | 20364 | maintenance |
| Tailwind CSS Forms An official Tailwind CSS plugin that provides a basic reset for form element styles, making inputs, selects, textareas, and checkboxes easy… | 61 | 4565 | active |
| sofish/typo.css Typo.css is a Chinese web typography CSS library that combines a clean reset stylesheet with a `.typo` class for optimized Chinese reading … | 59 | 4544 | active |
| mdui mdui is a Material Design 3 (Material You) UI component library built entirely with Web Components in TypeScript. It provides 30+ framework… | 77 | 4524 | active |
| seyhunak/twitter-bootstrap-rails A Rails gem that integrates Bootstrap 5.3 into the Rails asset pipeline, supporting Rails 5 through 8 and both Sprockets and Propshaft. It … | 71 | 4464 | active |
| dhg/Skeleton Skeleton is a lightweight, responsive CSS boilerplate (~400 lines of vanilla CSS) that styles raw HTML elements and provides a 12-column fl… | 23 | 19351 | maintenance |
| tobiasahlin/SpinKit SpinKit is a collection of simple loading spinners animated purely with CSS, using only transform and opacity animations for smooth, custom… | 23 | 19326 | maintenance |
| oxalorg/sakura Sakura is a minimal, classless CSS framework/theme that styles plain HTML without requiring any class names. You drop a single stylesheet i… | 53 | 4386 | stable |
| hunvreus/basecoat Basecoat is a Tailwind CSS component library that reimplements the shadcn/ui design system using semantic HTML, CSS, and a small amount of … | 68 | 4370 | active |
| creativetimofficial/material-tailwind Material Tailwind is an open-source components library combining Tailwind CSS utility classes with Material Design styling, available as @m… | 66 | 4362 | active |
| lc-soft/LCUI LCUI is a small C library for building cross-platform graphical user interfaces with fully custom-drawn components and a built-in CSS engin… | 68 | 4348 | active |
| konstaui/konsta Konsta UI is a free, open-source library of pixel-perfect mobile UI components built with Tailwind CSS, offering iOS and Material Design th… | 99 | 4272 | active |
| vadimdemedes/tailwind-rn tailwind-rn is a library that lets you use Tailwind CSS utility classes in React Native projects by converting Tailwind's generated CSS int… | 26 | 4267 | active |
| Sass Sass is a mature CSS preprocessor language that extends CSS with variables, nested rules, mixins, functions, and selector inheritance, comp… | 100 | 4234 | stable |
| papercss/papercss PaperCSS is a lightweight, 'less formal' CSS framework with a hand-drawn paper aesthetic, written in SCSS and distributed as compiled CSS v… | 34 | 4190 | active |
| taiga-family/taiga-ui Taiga UI is a fully-treeshakable Angular UI kit consisting of multiple base libraries and add-ons, offering 130+ components and 100+ direct… | 96 | 4070 | active |
| new.css new.css is a classless CSS framework (~4.8kb) that styles semantic HTML to look modern without requiring any classes or configuration. It i… | 65 | 4049 | stable |
| prazzon/Flexbox-Labs Flexbox Labs is a web-based visual tool for building CSS Flexbox layouts through an interactive playground with real-time preview. Users ca… | 56 | 4044 | active |
| Twind Twind is a small runtime compiler that converts Tailwind-style utility classes into CSS in the browser, Node.js, Deno, or workers, with no … | 66 | 3948 | stable |
| rafaelmardojai/firefox-gnome-theme A CSS-based userChrome theme that makes Firefox look like a native GNOME Adwaita application. It is installed via scripts or the Add Water … | 82 | 3906 | active |
| sakofchit/system.css System.css is a pure-CSS library for building web interfaces styled after Apple's classic System OS (1984-1991), based on System 6. It prov… | 32 | 3894 | active |
| jekyll/minima Minima is the default, one-size-fits-all Jekyll theme designed for writers, providing ready-made layouts for home pages, posts, and static … | 53 | 3837 | active |
| React95/React95 React95 is a React component library that recreates the Windows 95 UI aesthetic with modern React components. It includes packages for core… | 95 | 3836 | active |
| JetBrains/ring-ui Ring UI is JetBrains' collection of React-based web UI components used to build JetBrains web products and third-party plugins. It provides… | 77 | 3794 | stable |
| Fomantic-UI Fomantic-UI is the official community fork of Semantic-UI, a CSS and JavaScript framework for building responsive websites with human-frien… | 67 | 3770 | active |
| stisla/stisla Stisla is a CSS component library built on a fixed set of design tokens, with components styled via BEM classes and customizable through CS… | 87 | 3764 | active |
| Vuestic UI Vuestic UI is an MIT-licensed, open-source Vue 3 UI framework offering 60+ accessible, configurable components with dark theme, i18n, and g… | 56 | 3748 | active |
| rammcodes/Dopefolio Dopefolio is an open-source multipage portfolio website template for developers built with plain HTML, CSS, JavaScript, and SASS. It is ful… | 32 | 3747 | stable |
| BNDong/Cnblogs-Theme-SimpleMemory A beautification extension plugin for the Cnblogs (Blog Park) SimpleMemory blog theme, written primarily in CSS and JavaScript. It offers o… | 52 | 3711 | active |
| Salesforce Lightning Design System Salesforce Lightning Design System (SLDS) is the CSS framework and markup guidelines for building UIs with the Salesforce Lightning look an… | 10 | 3702 | active |
| ui-layouts/uilayouts An open-source React component library offering animated UI components, effects, and ready-to-use page blocks built on Tailwind CSS, Framer… | 65 | 3631 | active |
| designmodo/Flat-UI Flat UI Free is a flat-design theme and component framework built on top of Bootstrap 3, distributed as compiled CSS/JS, LESS/SCSS sources,… | 33 | 15263 | maintenance |
| MarsX-dev/floatui Float UI is a free, open-source collection of beautifully designed, responsive UI components and website templates built with React (and Vu… | 33 | 3594 | active |
| react/react-strict-dom React Strict DOM is a library for building styled React components that render to HTML/CSS on web and truly native components on native pla… | 70 | 3567 | active |
| liangjingkanji/DrakeTyporaTheme A collection of twelve flat, elegant CSS themes for the Typora Markdown editor, including Material, Google, JetBrains, Vue, Juejin, Purple,… | 23 | 3550 | active |
| system-fonts/modern-font-stacks A collection of copy-paste CSS font-family stacks that use pre-installed system fonts, organized by typeface classification (System UI, Hum… | 61 | 3529 | active |
| twbs/ratchet Ratchet is a CSS and JavaScript component framework from the Bootstrap family for building mobile app prototypes with simple HTML, CSS, and… | 25 | 14709 | maintenance |
| vincentdoerig/latex-css LaTeX.css is a minimal, almost class-less CSS library that makes any website look like a LaTeX document. It styles semantic HTML with optio… | 69 | 3481 | active |
| tailwindlabs/tailwindcss-intellisense The official Tailwind CSS IntelliSense extension for Visual Studio Code, providing intelligent tooling for Tailwind utility classes. It off… | 92 | 3473 | active |
| hperrin/svelte-material-ui Svelte Material UI (SMUI) is a library of Material Design UI components for Svelte applications, with full TypeScript support, Sass theming… | 77 | 3442 | active |
| Shopify/restyle Restyle is a type-enforced styling system for building UI components in React Native with TypeScript, focused on themability and design-sys… | 66 | 3424 | stable |
| twbs/rfs RFS is a unit resizing engine that automatically rescales CSS values like font-size, margin, padding, and border-radius based on viewport d… | 65 | 3369 | stable |
| kitian616/jekyll-TeXt-theme TeXt is a highly customizable Jekyll theme for building personal sites, team sites, blogs, project pages, and documentation. It offers mult… | 58 | 3344 | active |
| romboHQ/tailwindcss-motion tailwindcss-motion is a Tailwind CSS plugin by RomboHQ that provides a simple, composable syntax for CSS animations, including presets like… | 51 | 3324 | active |
| heroui-inc/tailwind-variants Tailwind Variants is a TypeScript library providing a first-class variant API on top of Tailwind CSS, letting you define typed component re… | 95 | 3319 | active |
| StartBootstrap/startbootstrap-sb-admin SB Admin is a free, open source Bootstrap admin dashboard template created by Start Bootstrap, distributed as HTML/CSS/JS with a Pug and SC… | 32 | 3302 | active |
| Automattic/juice Juice is a JavaScript library and CLI that inlines CSS stylesheets into HTML by converting CSS rules into style attributes. It is primarily… | 98 | 3284 | active |
| cristianbote/goober goober is a less-than-1KB CSS-in-JS library with a styled-components-like API for React, Preact, and vanilla DOM. It supports styled compon… | 72 | 3274 | active |
| owickstrom/the-monospace-web A minimalist CSS framework that renders web pages entirely on a monospace font grid, giving documents a terminal-like aesthetic. It ships a… | 36 | 3192 | active |
| evrone/postcss-px-to-viewport A PostCSS plugin that automatically converts pixel (px) units in CSS into viewport units (vw, vh, vmin, vmax). It enables building scalable… | 23 | 3149 | stable |
| CommandCodeAI/langui LangUI is a collection of 60+ free, open-source Tailwind CSS components designed for building UIs for AI, GPT, and LLM projects. Components… | 30 | 3145 | active |
| halfmoonui/halfmoon Halfmoon is a highly customizable, drop-in CSS replacement for Bootstrap 5, built with CSS variables and three core themes with dark mode s… | 23 | 3109 | active |
| botoxparty/XP.css XP.css is a CSS framework that styles semantic HTML to look like Windows XP and Windows 98 interfaces. It is a JavaScript-free extension of… | 24 | 3108 | active |
| zuramai/mazer Mazer is a free, open-source Bootstrap 5 admin dashboard template with a matching landing page, built with SCSS and no jQuery dependency. I… | 35 | 3107 | active |
| themepark-dev/theme.park theme.park is a collection of CSS themes and skins for 50+ self-hosted applications like Sonarr, Radarr, Plex, and Organizr. It ships theme… | 93 | 3094 | active |
| LittleLink LittleLink is a lightweight, self-hosted alternative to Linktree built with plain HTML and vanilla CSS. It provides 100+ branded button sty… | 90 | 3089 | active |
| megh-bari/pattern-craft A web-based library of 250+ modern CSS and Tailwind CSS background patterns and gradients that developers can preview and copy-paste into t… | 61 | 3074 | active |
| amfe/lib-flexible A classic Alibaba library that adapts web page layout to different screen widths by dynamically setting the root font-size (rem-based scali… | 32 | 12480 | maintenance |
| jamiebuilds/tailwindcss-animate A Tailwind CSS plugin that adds animation utility classes for enter/exit animations, fades, zooms, slides, and animation timing controls. I… | 32 | 3013 | stable |
| weilanwl/coloruicss ColorUI is a vivid, high-saturation CSS component library for WeChat mini-programs and UniApp, invoked via class names after importing its … | 32 | 12374 | maintenance |
| jpudysz/react-native-unistyles A high-performance styling library for React Native that enhances StyleSheet with C++/JSI bindings via Nitro Modules, enabling reactive sty… | 91 | 2968 | active |
| Tachyons Tachyons is a functional (utility-first) CSS toolkit of small, single-purpose, composable classes for building responsive UIs without writi… | 77 | 11727 | maintenance |
| UN-GCPDS/qt-material A Python library providing Material Design-inspired stylesheets for Qt applications built with PySide2, PySide6, PyQt5, and PyQt6. It ships… | 32 | 2864 | active |
| puikinsh/Bootstrap-Admin-Template Metis is a free, MIT-licensed Bootstrap 5 admin dashboard template built with Vite, Alpine.js, and SCSS. It ships a comprehensive set of pr… | 92 | 2847 | active |
| dominikmartn/nothing-design-skill A Claude Code skill that packages the Nothing design language (monochrome, typographic, industrial) into reusable design rules and token re… | 45 | 2814 | active |
| jgthms/minireset.css minireset.css is a tiny modern CSS reset that normalizes font sizes, block margins, tables, box sizing, and responsive media elements. It s… | 32 | 2798 | stable |
| Spectre.css Spectre.css is a lightweight (~10KB gzipped), responsive, modern CSS framework built on Flexbox. It provides base styles, a responsive grid… | 23 | 11310 | maintenance |
| trungvose/angular-spotify A web-based Spotify client built with Angular 15, Nx workspace, ngrx, TailwindCSS, and ng-zorro. It lets users browse and play Spotify musi… | 63 | 2782 | active |
| JordanSchuetz/LearnCS8-Resume A static resume template website built with HTML and Bootstrap, created as part of the LearnCS8 Lab 3 exercise. It provides a single-page r… | 32 | 11221 | maintenance |
| easysoft/zui ZUI 3 is an open-source HTML5 front-end UI component library offering rich CSS utility classes (built on Tailwind CSS) and powerful JavaScr… | 67 | 2765 | active |
| vuestorefront/storefront-ui Storefront UI is an open-source, framework-agnostic UI component library and design system for React and Vue.js, built specifically for eCo… | 96 | 2745 | active |
| merakiuilabs/merakiui Meraki UI is a free collection of copy-paste Tailwind CSS components built with Flexbox and CSS Grid, enhanced with Alpine.js for interacti… | 43 | 2700 | active |
| UI Kitten ngx-admin is a customizable admin dashboard template built with Angular and Nebular. It provides a rich set of UI components, theming optio… | 98 | 10665 | maintenance |
| beercss/beercss Beer CSS is a lightweight CSS framework (about 14.5kb brotli) for building Material Design 3 interfaces using semantic HTML. It is framewor… | 95 | 2611 | active |
| include-media include-media is a Sass library for writing CSS media queries with a simple, natural syntax. It provides a media() mixin with expressive op… | 57 | 2572 | stable |
| ConnorAtherton/loaders.css A collection of pure CSS loading animations designed for performance by limiting animations to cheap CSS properties. It ships as a styleshe… | 32 | 10225 | maintenance |
| Milligram Milligram is a minimalist CSS framework providing a small set of base styles for typography, buttons, forms, tables, and grids in only 2kb … | 64 | 10217 | maintenance |