Software Alternatives, Accelerators & Startups

🎨 CSS Framework

A collection of pre-prepared libraries that can be used as a basis for designing websites, providing a consistent approach to styling with CSS, often including predefined grid systems and UI components.

The best CSS Framework Products based on votes, our collection of reviews, verified products and a total of 1,376 factors.

Not enough products to filter down. Redirecting to the primary CSS Framework.

Best CSS Framework Products in 2025

  1. 327

    Simple and flexible HTML, CSS, and JS for popular UI components and interactions

    Open Source

    /bootstrap-alternatives
  2. 297

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

    Open Source

    /tailwind-css-alternatives
  3. RealityMAX is the AI-powered 3D design collaboration platform, 100% online. Cooperate remotely with your colleagues on 3D projects and easily share your work with clients. Create Web3D and AR experiences in a snap, without a line of code.

    Visit website freemium $40.0 / Monthly (Pro with up to 500 GB of storage space)

    Visit website
  4. 239

    Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.

    Open Source

    /bulma-alternatives
  5. 224

    A modern responsive front-end framework based on Material Design

    Open Source

    /materialize-css-alternatives
  6. 174

    A lightweight and modular front-end framework for developing fast and powerful web interfaces

    Open Source

    /uikit-alternatives
  7. 190

    The most advanced responsive front-end framework in the world

    Open Source

    /foundation-alternatives
  8. 178

    A UI Component library implemented using a set of specifications designed around natural language

    Open Source

    /semantic-ui-alternatives
  9. 132

    A CSS Framework and a Set of React Components that Implement Google's Material Design

    Open Source free

    /material-ui-alternatives
  10. 76

    Syntatically Awesome Style Sheets

    Open Source

    /sass-alternatives
  11. 129

    A Beautiful Boilerplate for Responsive, Mobile-Friendly Development

    Open Source

    /skeleton-css-alternatives
  12. 119

    A set of small, responsive CSS modules that you can use in every web project.

    Open Source

    /purecss-alternatives
  13. 58

    Simple, modular and accessible UI components for your React applications.

    Open Source

    /chakra-ui-alternatives
  14. 60

    Increase code readability. Add vendor prefixes to CSS rules using values from Can I Use. Autoprefixer will use the data based on current browser popularity and property support to apply prefixes for you.

    Open Source

    /postcss-alternatives

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