Bootstrap
Frontend toolkit providing prebuilt HTML, CSS, and JavaScript components for building and
Bootstrap is a frontend toolkit for building responsive websites. It provides a prebuilt grid system and components, a Sass-based modular architecture for customizing styles, CSS variables for theme and component overrides, a Utility API for creating or modifying utility classes, and a set of JavaScript plugins that run without jQuery. It is distributed through package managers (npm, RubyGems, Composer, Meteor) and via CDN.
Key features include the grid system, prebuilt components, Sass variables, maps, functions, and mixins, CSS variables for global and component-level theming, a Utility API for generating and customizing utility classes, and JavaScript plugins such as Alert, Button, Carousel, Collapse, Dropdown, Modal, Offcanvas, Popover, Scrollspy, Tab, Toast, and Tooltip. Popper is used for Popover and Tooltip. Bootstrap Icons provides an SVG icon library. It can be installed via npm, RubyGems, Composer, Meteor, or included via CDN.
Bootstrap is for developers building responsive websites who want a customizable frontend foundation. It is available as an open-source project, with source files installable through package managers or downloadable, and compiled CSS and JS available via CDN.
12 alternatives to Bootstrap
Ranked by how well each tool replaces Bootstrap: shared features, audience, price and popularity.
Modern CSS framework based on Flexbox.
Covers 0 of 2 key features, has a free plan and is open source.
Free planOpen source57 out of 100 matchContact sales- 57 out of 100 match$16/mo
User Interface is the language of the web
Covers 1 of 2 key features, has a free plan and is open source.
Free planOpen source56 out of 100 matchFreeHigh-quality, open-source web icons for your projects.
Covers 1 of 2 key features and has a free plan.
Free plan56 out of 100 match$3.25/moFrontend tools and generators for Bootstrap, CSS Grid, VoxCSS, tokens, terrains and SVG.
Covers 0 of 2 key features and is open source.
Open source55 out of 100 match—Open source UI component framework for Vue
Covers 1 of 2 key features, has a free plan and is open source.
Free planOpen source55 out of 100 matchContact salesUX/UI and prototyping tool for designers and developers
Covers 1 of 2 key features and has a free plan.
Free plan55 out of 100 match$29/moA free and open-source game engine for making 2D, 3D and cross-platform projects,
Covers 2 of 2 key features, has a free plan and is open source.
Free planOpen source54 out of 100 matchFreeStreamline web development with standardized dimensions.
Covers 0 of 2 key features, has a free plan and is open source.
Free planOpen source54 out of 100 matchFreeThe Free & Open Source Image Editor
Covers 2 of 2 key features, has a free plan and is open source.
Free planOpen source54 out of 100 matchFreePremium Bootstrap themes, templates, UI Kits and more developed by Creative Tim.
Covers 0 of 2 key features.
54 out of 100 match—The Developer Tool for Designers
Covers 1 of 2 key features, has a free plan and is open source.
Free planOpen source53 out of 100 matchContact sales