Bootstrap
Simple and flexible HTML, CSS, and JS for popular UI components and interactions
- Open Source
Bootstrap Alternatives
The best Bootstrap alternatives based on verified products, community votes, reviews and other factors.
Latest update:
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A utility-first CSS framework for rapidly building custom user interfaces.
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A modern responsive front-end framework based on Material Design
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Flagsmith 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.
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Bulma is an open source CSS framework based on Flexbox and built with Sass. It's 100% responsive, fully modular, and available for free.
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The most advanced responsive front-end framework in the world
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A UI Component library implemented using a set of specifications designed around natural language
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A CSS Framework and a Set of React Components that Implement Google's Material Design
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A lightweight and modular front-end framework for developing fast and powerful web interfaces
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A JavaScript library for building user interfaces
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A framework for building native apps with React
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A Beautiful Boilerplate for Responsive, Mobile-Friendly Development
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Ionic is a cross-platform mobile development stack for building performant apps on all platforms with open web technologies.
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An enterprise-class UI design language and React implementation with a set of high-quality React components, one of best React UI library for enterprises
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A set of small, responsive CSS modules that you can use in every web project.
Bootstrap is a great framework. I used to use it with every project. However, at some point it was very difficult to customize. So I slowly migrated to Bulma. Nowadays... I use mostly Tailwind.
Note: the last version that I've used is 3.x, so things might have changed since then. I just checked and the latest version is 5.x.