Originally created by a designer and a developer at Twitter, Bootstrap has become one of the most popular front-end frameworks and open source projects in the world.

Bootstrap was created at Twitter in mid-2010 by @mdo and @fat. Prior to being an open-sourced framework, Bootstrap was known as Twitter Blueprint. A few months into development, Twitter held its first Hack Week and the project exploded as developers of all skill levels jumped in without any external guidance. It served as the style guide for internal tools development at the company for over a year before its public release, and continues to do so today.

Originally released on , we've since had over twenty releases, including two major rewrites with v2 and v3. With Bootstrap 2, we added responsive functionality to the entire framework as an optional stylesheet. Building on that with Bootstrap 3, we rewrote the library once more to make it responsive by default with a mobile first approach.

Bootstrap is maintained by the founding team and a small group of invaluable core contributors, with the massive support and involvement of our community.

Get involved with Bootstrap development by opening an issue or submitting a pull request. Read our contributing guidelines for information on how we develop.

winston

This theme was built during the December '13 Hackathon by Jason Benterou, Simon Darken & Steph Monette.

This project is meant to help designers and developers prototype quickly, but still get the feel of the Modcloth brand. This theme should not be looked to as the standard for design patterns.

Check out the XD team's style guide for more information on Modcloth design patterns.

Stay up to date on the development of Bootstrap and reach out to the community with these helpful resources.

You can also follow @twbootstrap on Twitter for the latest gossip and awesome music videos.

Bootstrap is released under the Apache 2 license and is copyright 2013 Twitter. Boiled down to smaller chunks, it can be described with the following conditions.

It allows you to:

  • Freely download and use Bootstrap, in whole or in part, for personal, company internal or commercial purposes
  • Use Bootstrap in packages or distributions that you create

It forbids you to:

  • Redistribute any piece of Bootstrap without proper attribution
  • Use any marks owned by Twitter in any way that might state or imply that Twitter endorses your distribution
  • Use any marks owned by Twitter in any way that might state or imply that you created the Twitter software in question

It requires you to:

  • Include a copy of the license in any redistribution you may make that includes Bootstrap
  • Provide clear attribution to Twitter for any distributions that include Bootstrap

It does not require you to:

  • Include the source of Bootstrap itself, or of any modifications you may have made to it, in any redistribution you may assemble that includes it
  • Submit changes that you make to Bootstrap back to the Bootstrap project (though such feedback is encouraged)

The full Bootstrap license is located in the project repository for more information.