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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Kimp is an unlimited design company, specializing in graphic design (including print and digital designs, custom illustrations, landing page designs and email designs) and video design.
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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.