Open source. Open possibilities.

Spruce CSS is an open-source, lightweight Sass-based CSS design system and framework offering variables, mixins, functions, few utility classes and CSS custom property theming with dark mode.

Frontend for Tuleva's Estonian pension onboarding web client, built with React and TypeScript, featuring migration from Redux to React Query and modern testing practices.

Bootstrap is a widely used open-source front-end framework for building responsive, mobile-first websites. It provides compiled and source CSS, JavaScript components, utility classes, and theming tools, with options for install via npm, Composer, NuGet and more.

Cloudscape Design System's React component library, open-sourced by AWS. Provides accessible, ready-made UI components and global styles for building large-scale web applications, with documentation on the Cloudscape website.

Carbon is IBM's open-source design system for products and experiences. This monorepo provides React and web component libraries, Sass styles, design tokens, icons, pictograms, and tooling for building consistent interfaces.

A curated directory of CSS frameworks organized by category, including base resets, classless frameworks, lightweight options, general-purpose frameworks, Material Design, utility-based, specialized, and stalled projects.

Prettier is an opinionated code formatter that parses code and reprints it with consistent rules, taking maximum line length into account and wrapping when needed. It can run in editors on save, pre-commit hooks, or CI.

Tabler is a free, MIT-licensed HTML dashboard UI kit built on Bootstrap 5, offering ready-made layouts, components and 120+ demo pages for admin panels, dashboards and web apps, with dark mode, RTL stylesheets, Sass sources and TypeScript types.

Oruga is a lightweight Vue.js 3 UI component library with no CSS framework dependency. It provides customizable components, tree-shaking, themes, and class-mapping configuration for integrating Tailwind, Bulma, Bootstrap, or custom styles.

Webcore UI is an open-source component library for Astro, Svelte, and React. It uses Sass for styling and offers customizable components, blocks, templates, a CLI, themes, and CSS variables.

Gentelella v4 is a free MIT-licensed admin dashboard template built with vanilla JavaScript, SCSS and Vite 8 — 58 HTML pages, 20 ECharts variants, dark mode, RTL, PWA support and a live theme generator, with no Bootstrap or jQuery.

react-md is an accessible React component library built from the Material Design guidelines with Sass. It offers low-level customizable components, global and component-level theming with CSS variables, light/dark/system themes, right-to-left language support, and is written in TypeScript.

Free MIT-licensed React admin and dashboard template built on React 19, CoreUI React components and Vite, with AI-assistant context files (.cursorrules, ARCHITECTURE.md, DEVELOPMENT.md) and a ready-made layout, routing and sidebar skeleton.

CoreUI Free Vue Admin Template is an open-source MIT-licensed dashboard starter built with Vue 3, Vite, and CoreUI components, featuring AI-friendly development aids like .cursorrules, ARCHITECTURE.md, and DEVELOPMENT.md to assist coding assistants.