Ross ROSS = Recommend OSS · open-source software intelligence for agents

Open-source web-design software

1642 open-source libraries, tools and applications tagged web-design, ranked by how closely web-design 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.

1642 products, primary matches first, then adoption-weighted; health v2 shown.

ProductHealth v2StarsMaturity
vinceliuice/WhiteSur-gtk-theme
WhiteSur GTK Theme is a macOS Big Sur-style theme for GTK-based Linux desktops, supporting GTK3, GTK4, GNOME Shell, GDM, Flatpak apps, and …
919314active
dotnet/blazor
Blazor is a front-end web framework from Microsoft for building interactive web apps in C# using reusable components that can run on the cl…
109255stable
gridstack/gridstack.js
GridStack.js is a pure TypeScript library for building draggable, resizable, responsive dashboard grid layouts with no external dependencie…
999205active
NG-ZORRO/ng-zorro-antd
NG-ZORRO is an enterprise-class Angular UI component library implementing the Ant Design specification, offering 70+ high-quality component…
979179active
open-pencil/open-pencil
OpenPencil is an open-source, AI-native design editor that opens and writes native Figma (.fig) files, with built-in AI chat that can creat…
839153active
Webstudio
Webstudio is an open-source visual website builder and Webflow alternative that gives developers and designers full control over CSS, HTML,…
959081active
RAWGraphs
RAWGraphs is an open-source web application for creating custom vector-based (SVG) data visualizations from tabular data, built on top of d…
649032active
BewlyBewly/BewlyBewly
BewlyBewly is a browser extension that redesigns the Bilibili homepage with a modern UI inspired by YouTube, Vision OS, and iOS, including …
108809active
radix-ui/themes
Radix Themes is an open-source React component library with pre-styled, accessible components that work out of the box with minimal configu…
588721active
React Suite
React Suite (rsuite) is a comprehensive React UI component library with 80+ enterprise-grade components covering forms, data display, navig…
998696active
bwya77/vscode-dark-islands
A dark color theme for VS Code and VSCodium inspired by the easemate IDE and JetBrains Islands theme, featuring floating glass-like panels,…
518533active
chinchang/hint.css
Hint.css is a pure CSS tooltip library that creates accessible tooltips using aria-label/data attributes, pseudo elements, and CSS3 transit…
238426stable
Remix Icon
Remix Icon is an open-source neutral-style icon library with 3200+ carefully crafted icons on a 24x24 grid, available in Outlined and Fille…
698383active
Butterfly Hexo Theme
Butterfly is a modern, feature-rich theme for the Hexo static site generator, built with pug templates and stylus styles. It provides a car…
958367active
ng-bootstrap/ng-bootstrap
A library of Angular components built from scratch on top of Bootstrap 5 CSS, with APIs designed for the Angular ecosystem. It provides wid…
768226active
folke/tokyonight.nvim
Tokyo Night is a dark and light Neovim colorscheme written in Lua, ported from the VS Code TokyoNight theme. It supports LSP, Treesitter, a…
658217stable
fluid-dev/hexo-theme-fluid
Fluid is an elegant Material Design theme for the Hexo static site generator, installable via npm for Hexo 5.0+. It provides a polished blo…
688167active
twbs/icons
Bootstrap Icons is the official open source SVG icon library for Bootstrap, offering over 2,000 free, high-quality icons. Icons can be used…
788136stable
pqoqubbw/icons
lucide-animated is an open-source (MIT) collection of beautifully crafted animated React icons built on Lucide icons and Motion. It ships a…
638129active
codewithsadee/vcard-personal-portfolio
A fully responsive personal portfolio website template built with HTML, CSS, and JavaScript. It presents a vCard-style personal site with a…
408119active
PapirusDevelopmentTeam/papirus-icon-theme
Papirus is a free and open source SVG icon theme for Linux, based on the Paper Icon Set, with thousands of pixel-perfect icons for apps, ac…
838103active
PurgeCSS
PurgeCSS is a tool that removes unused CSS selectors by analyzing content files and matching them against CSS selectors. It ships as a CLI,…
748051stable
junixapp/XPopup
XPopup is a powerful and elegant popup library for Android that can replace Dialog, PopupWindow, PopupMenu, BottomSheet, DrawerLayout, and …
238026stable
twin.macro
Twin.macro is a Babel macro that compiles Tailwind CSS classes into CSS-in-JS objects at build time, supporting libraries like emotion, sty…
528024active
jakubkrehel/skills
A collection of Markdown-based agent skills for AI coding assistants (Claude Code, Codex, Opencode) that guide building polished user inter…
588005active
Dogfalo/materialize
Materialize is a responsive front-end CSS framework based on Google's Material Design language, shipped with compiled CSS/JS, Sass sources,…
6338787maintenance
vercel/styled-jsx
styled-jsx is a Babel-based CSS-in-JS library that provides full, scoped CSS support inside JSX components, with dynamic styles and server-…
587775stable
glidejs/glide
Glide.js is a dependency-free JavaScript ES6 slider and carousel library for the web. It is lightweight (~7kb gzipped), modular, extendable…
637667stable
styled-components
polished is a lightweight JavaScript library of Sass-style helper functions, mixins, and color utilities for writing styles in JavaScript. …
527665stable
UIEffect
UIEffect is a Unity package for applying rich visual effects like grayscale, blur, and dissolve to UI elements directly from the Inspector …
937660active
Phosphor Icons
Phosphor Icons is a flexible open-source icon family offering 1,248+ SVG icons in six weights (Thin, Light, Regular, Bold, Fill, Duotone), …
647543active
sindresorhus/modern-normalize
A small CSS library that normalizes browsers' default styles, a modernized alternative to normalize.css targeting only the latest Chrome, F…
667419stable
plantuml-stdlib/C4-PlantUML
C4-PlantUML is a set of PlantUML macros and includes for creating C4 model software architecture diagrams as code. It lets teams describe c…
827411active
LiamGvchi/gc-minimal-zine-poster
A Codex skill that turns themes, sentences, photos, or reference sets into minimal zine-style editorial poster prompts and generated images…
737365active
WenchaoD/FSPagerView
FSPagerView is an elegant iOS/tvOS screen slide library built on UICollectionView, supporting infinite scrolling, automatic sliding, and 3D…
327360stable
WebStackPage
WebStack is an open-source, responsive static bookmark/navigation website template built on Bootstrap, designed for creating personal or te…
327357active
React95
React95 is a React component library that recreates the Windows 95 user interface aesthetic using styled-components. It provides themed, re…
237270active
op7418/guizang-social-card-skill
A Claude Code / Codex agent skill that generates Xiaohongshu (Rednote) carousel images and WeChat 21:9 + 1:1 cover pairs from articles, not…
517222active
U.S. Web Design System
The United States Web Design System (USWDS) is a library of open source UI components, design tokens, utilities, and a visual style guide f…
917210active
SublimeText/Spacegray
Spacegray is a set of hyperminimal UI themes for Sublime Text, each paired with a Base16 color scheme. It ships in several flavors (Dark, L…
537207stable
Elementor
Elementor is an open-source WordPress plugin providing an advanced front-end drag-and-drop page builder for creating pixel-perfect websites…
957087active
olton/metroui
Metro UI is a progressive, HTML-first front-end framework and component library in Windows Metro style, offering 150+ components, 900+ icon…
627083active
grab/cursor-talk-to-figma-mcp
An MCP server plus Figma plugin that lets AI agents like Cursor, Claude Code, and Codex read and programmatically modify Figma designs. A W…
597054active
ChenYilong/CYLTabBarController
CYLTabBarController is an iOS UI library that adds Lottie animations, Liquid Glass styling, red-dot badges, and an enlarged center button t…
947036active
nuxt/ui
Nuxt UI is a comprehensive Vue UI component library offering 125+ accessible, Tailwind CSS-styled components built on Reka UI and Tailwind …
976952stable
joe-bell/cva
Class Variance Authority (cva) is a tiny TypeScript library for building type-safe, variant-driven class names for UI components, with firs…
686903stable
openstyles/stylus
Stylus is a browser extension for Chrome, Firefox, and Chromium-based browsers that lets users restyle websites by installing and managing …
966898active
Nord
Nord is an arctic, north-bluish color palette of sixteen carefully selected dimmed pastel colors designed for code syntax highlighting and …
236888stable
kristopolous/BOOTSTRA.386
BOOTSTRA.386 is a Twitter Bootstrap theme (supporting Bootstrap v2 through v5) that styles webpages to look like 1980s DOS-era graphical in…
526875active
google/material-design-lite
Material Design Lite is a Google implementation of Material Design components in vanilla CSS, JS, and HTML with no framework dependencies. …
5532185maintenance
Heti
Heti is a CSS/SCSS stylesheet library that enhances Chinese web typography according to common Chinese typesetting conventions (CLREQ). It …
466732stable
ibelick/motion-primitives
Motion-Primitives is an open-source UI kit of beautifully designed, animated React components built with Motion (Framer Motion) and Tailwin…
686717active
ppoffice/hexo-theme-icarus
Icarus is a simple, delicate, and modern theme for the Hexo static site generator, distributed as an npm package. It ships with extensive b…
556652active
soumyajit4419/Portfolio
A self-coded personal developer portfolio website built with React.js, Express.js, and React-Bootstrap, showcasing projects, resume, and te…
506494active
htmlstreamofficial/preline
Preline UI is an open-source Tailwind CSS component library offering prebuilt UI components, blocks, templates, and headless JavaScript plu…
946491active
Hugo Theme Stack
A card-style Hugo theme designed for bloggers, built with SCSS and vanilla JavaScript for lightweight, fast sites. It ships with dark mode,…
826477active
nextapps-de/winbox
WinBox.js is a lightweight, dependency-free HTML5 window manager library for the web that lets developers create draggable, resizable, full…
236451stable
boringdesigners/boring-avatars
Boring Avatars is a small open-source React library that generates unique, SVG-based avatars from any username, email, or random string, wi…
666448active
Grsmto/simplebar
SimpleBar is a lightweight (6kb) vanilla JavaScript library that replaces the browser's default scrollbar with a custom CSS-styled one whil…
426415stable
Elastic UI Framework (EUI)
The Elastic UI Framework (EUI) is a collection of typed React UI components, themes, and style utilities for building web interfaces with E…
956370stable
Foundation for Sites
Foundation for Sites is a responsive front-end framework providing HTML, CSS (Sass), and JavaScript components for building websites and ap…
6729798maintenance
pheralb/svgl
SVGL is a curated library of 600+ optimized SVG logos for brands and technologies, served through a searchable web app and a free REST API.…
666339active
IanLunn/Hover
Hover.css is a collection of CSS3-powered hover effects for links, buttons, logos, SVG, and featured images, available in CSS, Sass, and LE…
2329407maintenance
nathancahill/split
A monorepo of tiny, zero-dependency JavaScript utilities for creating resizable split views, including Split.js (for float/flex layouts) an…
236280stable
rdev/liquid-glass-react
A React component library that recreates Apple's Liquid Glass visual effect with configurable refraction, blur, chromatic aberration, and e…
276263active
chakra-ui/panda
Panda is a universal, type-safe CSS-in-JS styling engine that generates atomic CSS at build time via static analysis of your JavaScript/Typ…
956217active
Fontsource
Fontsource is a monorepo of open-source fonts packaged into individual NPM packages for self-hosting in web applications. It bundles over 2…
996195active
adamgiebl/neumorphism
Neumorphism.io is a web-based CSS code generator for the Neumorphism/Soft UI design trend, built with React. It lets designers and develope…
506169active
nolly-studio/cult-ui
cult/ui is a collection of accessible, customizable React components built with Tailwind CSS and Framer Motion, designed for design enginee…
636161active
zerostaticthemes/square-ui
A collection of open-source, beautifully crafted UI layouts and full-page templates built with Next.js, shadcn/ui, Tailwind CSS, and Radix …
636117active
creativetimofficial/david-ai
David AI (formerly tailwind-starter-kit) is a free, open-source library of 300+ customizable, production-ready UI components built with Tai…
346091active
OpenPencil
OpenPencil is an open-source, AI-native vector design application where users generate and edit UI designs on an infinite canvas via natura…
686076active
skeletonlabs/skeleton
Skeleton is an adaptive design system built on Tailwind CSS, providing themes, design tokens, utility classes, and turnkey UI components fo…
926074active
jvalen/pixel-art-react
Pixel Art to CSS is a web-based pixel art drawing and animation editor built with React and Redux. It generates ready-to-use CSS code from …
496041active
michalsnik/aos
AOS is a small JavaScript library that animates HTML elements as they scroll into view, driven by CSS transitions and data attributes. It o…
3228050maintenance
Keldos-Li/typora-latex-theme
A Typora theme that restyles the Markdown editor to look like Chinese LaTeX typesetting, written in SCSS. It targets lightweight academic w…
595981active
grassmunk/Chicago95
Chicago95 is a Windows 95-style total conversion theme for XFCE/Xubuntu on Linux, including GTK2/GTK3 themes, icons, an XFWM window manager…
665965active
duilib/duilib
Duilib is a free, open-source DirectUI interface library for building Windows desktop application UIs in C++. It features a simple, extensi…
605963active
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…
235918active
ryanoasis/vim-devicons
A Vim plugin that adds file type glyph icons to popular Vim plugins like NERDTree, vim-airline, CtrlP, lightline, and vim-startify. It is h…
235807stable
Dammyjay93/interface-design
A Claude Code plugin/skill that gives coding agents persistent memory of UI design decisions, saving choices like spacing grids, colors, an…
685785active
GoogleChromeLabs/ProjectVisBug
VisBug is an open-source browser extension that brings design-tool interactions to any live webpage, letting designers point, click, multi-…
105766active
Arco Design
Arco Design is a comprehensive React UI components library based on the Arco Design system, offering 60+ TypeScript-written components with…
915711active
dcastil/tailwind-merge
A TypeScript utility function that merges Tailwind CSS class strings while resolving style conflicts, keeping the last conflicting class. I…
935695stable
solstice23/argon-theme
Argon is a lightweight, clean, and highly customizable WordPress theme built on the Argon Design System. It offers extensive customization …
615588active
epicweb-dev/epic-stack
The Epic Stack is an opinionated full-stack web application starter and reference built on Remix, with foundational tooling (auth, testing,…
795538active
knadh/oat
Oat is an ultra-lightweight (~10KB min+gz), zero-dependency UI component library built on semantic HTML, CSS, and vanilla JS WebComponents.…
845534active
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…
955533active
argyleink/open-props
Open Props is a collection of 500+ CSS custom properties (design tokens) covering colors, gradients, shadows, typography, easings, animatio…
635531active
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…
305477active
kepano/obsidian-minimal
Minimal is a highly customizable, distraction-free CSS theme for the Obsidian note-taking app, available for desktop, mobile, and tablet. I…
985443active
bvaughn/react-resizable-panels
A React component library for building resizable panel groups and layouts, with horizontal and vertical resizing support. It includes TypeS…
965400active
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 …
675399active
Jakubantalik/transitions.dev
Transitions.dev is an interactive collection of reusable, copy-ready CSS transition snippets for common web UI interaction patterns (modals…
605391active
Splide
Splide is a lightweight, dependency-free slider/carousel library written in TypeScript with strong accessibility support. It offers drag/sw…
235366stable
blinkfox/hexo-theme-matery
hexo-theme-matery is a feature-rich Hexo blog theme built with Material Design and responsive layout. It provides carousels, waterflow post…
235357stable
varletjs/varlet
Varlet is a Vue 3 component library based on Material Design 2 and 3, offering 70+ lightweight general-purpose components for mobile and de…
915334active
csstools/sanitize.css
sanitize.css is a CSS library providing consistent, cross-browser default styling of HTML elements, developed alongside normalize.css. It w…
525311stable
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…
2323742maintenance
Swup
Swup is a versatile and extensible page transition library for server-rendered websites, written in TypeScript. It intercepts link clicks, …
925232stable

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