### Frameworks

- [Tailwind CSS](https://tailwindcss.com/) - utility-first CSS framework for rapidly building custom designs
- [Twitter Boostrap](https://getbootstrap.com/) - world’s most popular front-end open source toolkit
- [PureCSS](https://purecss.io/) - A set of small, responsive CSS modules
- [Bulma](https://bulma.io/) - Bulma is a free, open source CSS framework based on Flexbox
- [Foundation](https://get.foundation/) - A responsive front-end framework
- [UnoCSS](https://unocss.dev/) - Instant On-demand Atomic CSS Engine
- [UIKit](https://getuikit.com/) - Lightweight and modular front-end framework
- [Primer CSS](https://primer.style/css/) - CSS Framework from GitHub
- [Stylify](https://stylifycss.com/) - Stylify uses CSS-like selectors to generate optimized utility-first

and some minimalistic

- [MVP.css](https://andybrewer.github.io/mvp/) - A minimalist stylesheet for HTML elements
- [Picni.css](https://picnicss.com/) - Lightweight and beautiful CSS library
- [matcha.css](https://matcha.mizu.sh/) - A minimalist CSS framework

### Tools

- [PostCSS](https://postcss.org/) - A tool for transforming CSS with JavaScript
- [PurgeCSS](https://purgecss.com/) - PurgeCSS is a tool to remove unused CSS from your project