Bootstrap
The most popular HTML, CSS, and JS library in the world
★ 4.4
The world's most popular front-end toolkit. Build responsive, mobile-first sites with prebuilt components, JavaScript plugins, and powerful Sass variables.
170K
GitHub Stars
supported
TypeScript
easy
Learning Curve
4.2
DX Score
Pricing
Model
free
Free Tier
MIT licensed, fully open source
Features
- ✓ Responsive grid system
- ✓ Prebuilt UI components
- ✓ JavaScript plugins
- ✓ Sass customization
- ✓ Utility classes
- ✓ Form controls
- ✓ Icons library
- ✓ Themes marketplace
Pros
- + Massive ecosystem and community
- + Extensive documentation
- + Quick prototyping
- + Consistent cross-browser support
- + Large talent pool familiar with it
Cons
- - Sites can look generic without customization
- - Large bundle size if not tree-shaken
- - jQuery dependency in older versions
- - Opinionated styling can be hard to override
Best For
startup enterprise
Alternatives
css components responsive grid bootstrap