#css

ESLint mono-plugin bundler with strict, opinionated defaults for JavaScript, TypeScript, Svelte, HTML, CSS, JSON, JSONC, and YAML.

Ultra-lightweight, zero dependency, semantic HTML, CSS, JS UI library. ~10KB min+gz.

Export tool for Figma. You can easily and automatically export your Figma components and use them directly into your website.

Rust CSS color parser library

Calculate the Code Quality score of your CSS based on a range of different quality guards.

icebreaker's postcss-plugins

Convert CSS text to a React Native stylesheet object

PostCSS plugin to sort and combine media queries (mobile-first / desktop-first) with support for CSS Level 4 range syntax and nested media queries.

Raw browser/feature support data from caniuse.com

tailwind-merge as a dev tool, not a dependency

:rainbow: Javascript color conversion and manipulation library

JavaScript SDK of QuickBlox cloud backend platform

Prefix all CSS rules with a selector

The fast, most optimal, and correct HTML & XML parsing library for Python written in Rust.

Installable font package for BC Sans.

Constraint-based adaptive rendering framework. Maps continuous signals (viewport, scroll, time, pointer) to discrete states via BoundaryDef primitives. Multi-target compilation to CSS @container queries, GLSL/WGSL uniforms, ARIA attributes. Reactive runtime with hysteresis, blend trees, and content-addressed identity.

Preline UI is an open-source set of prebuilt UI components based on the utility-first Tailwind CSS framework.

svelte library components

Stylelint configuration with support for XCSS via ekscss.

Reusable Biome Config

Carefully designed icons for modern interfaces. MingCute is a simple, elegant open-source icon library built for web and mobile products.

Dot-only simple esoteric programming language

🦋 Customization of Oruga components with a custom styling

High-performance CSS parser optimized for static analysis and formatting

Ruby HTML and CSS sanitizer.

Docusaurus 3 plugin for CSS-counter numbered headings, TOCs, and MDX frontmatter conventions

🧰 Automatically resolves Tailwind CSS class conflicts in PHP

TEAM23’s unified lint-rules monorepo — eslint + stylint

Less.js ported to PHP. Mirrored from https://gerrit.wikimedia.org/g/mediawiki/libs/less.php/

Extract every URL referenced inside CSS stylesheets — url(), @import, and background sources.