🎨 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 1,390 factors.
Best CSS Framework Products in 2025
- Open-Source CSS Framework products
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/tailwind-css-alternativesA utility-first CSS framework for rapidly building custom user interfaces.
Key Tailwind CSS features:
Utility-First Approach Customization Consistent Design Responsive Design
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Try for freeFlagsmith lets you manage feature flags and remote config across web, mobile and server side applications. Deliver true Continuous Integration. Get builds out faster. Control who has access to new features. We're Open Source.
Key Flagsmith features:
Feature Flags Remote Config A/B/X Testing & Optimization Organization Management
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/bootstrap-alternativesSimple and flexible HTML, CSS, and JS for popular UI components and interactions.
Key Bootstrap features:
Responsive Design Pre-designed Components Cross-browser Compatibility Extensive Documentation
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/bulma-alternativesBulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
Key Bulma features:
Simple and Elegant Design Responsive Layouts Ease of Use BEM Methodology
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/materialize-css-alternativesA modern responsive front-end framework based on Material Design.
Key Materialize CSS features:
Responsive Design Material Design Component Variety Customization
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/uikit-alternativesA lightweight and modular front-end framework for developing fast and powerful web interfaces.
Key UIKit features:
Modularity Extensive Documentation Responsive Design Customization
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/foundation-alternativesThe most advanced responsive front-end framework in the world.
Key Foundation features:
Customizability Responsive Design Semantic Code Range of Components
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/semantic-ui-alternativesA UI Component library implemented using a set of specifications designed around natural language.
Key Semantic UI features:
Intuitive Class Names Customizability Comprehensive Components Flexibility
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/material-ui-alternativesA CSS Framework and a Set of React Components that Implement Google's Material Design.
Key Material UI features:
Comprehensive Component Library Customizability Active Community and Support Improved Productivity
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/sass-alternativesSyntatically Awesome Style Sheets.
Key Sass features:
Nesting Variables Mixins Partials and Import
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/skeleton-css-alternativesA Beautiful Boilerplate for Responsive, Mobile-Friendly Development.
Key Skeleton CSS features:
Lightweight Simplicity Responsive Grid Clean Design
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/purecss-alternativesA set of small, responsive CSS modules that you can use in every web project.
Key Purecss features:
Lightweight Responsive Modular Easy Integration
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/chakra-ui-alternativesSimple, modular and accessible UI components for your React applications.
Key Chakra UI features:
Component Library Theming Accessibility Responsive Design
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/postcss-alternativesIncrease 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.
Key PostCSS features:
Modularity Performance Large ecosystem Active community
