Cooltipz.css is a pure CSS tooltip library that is lightweight, modern, accessible, customisable and easy to use

A CSS parser, transformer, and minifier written in Rust

Open Web data by the Mozilla Developer Network

a CSS selector compiler/engine

Algorithms to help you parse CSS from an array of tokens.

PostCSS plugin for CSS Modules to pass arbitrary values between your module files

A tool set for CSS: fast detailed parser (CSS → AST), walker (AST traversal), generator (AST → CSS) and lexer (validation and matching) based on specs and browser implementations

Tokenize CSS

Solve CSS math expressions

css loader module for webpack

Parse CSS color values

extracts CSS into separate files

TailwindCSS v4.0 compatible replacement for `tailwindcss-animate`.

A modern CSS parser and stringifier with TypeScript support

CSS color - Resolve and convert CSS colors.

A well-tested CSS minifier

PostCSS plugin to replace overflow-wrap with word-wrap or optionally retain both declarations.

A utility-first CSS framework for rapidly building custom user interfaces.

A CSS Modules transform to extract local aliases for inline imports

CSS Object Model implementation and CSS parser