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 Friday, August 19, 2011, 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.

Mark Otto @mdo

Jacob Thornton @fat

Chris Rebert @cvrebert

Julian Thilo @juthilo

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

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

• Read and subscribe to The Official Bootstrap Blog.
• Have a question that's not a feature request or bug report? Ask on the mailing list.
• Chat with fellow Bootstrappers using IRC in the irc.freenode.net server, in the ##twitter-bootstrap channel.
• Find inspiring examples of people building with Bootstrap at the Bootstrap Expo.

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