Key facts
- Original authors
- Mark Otto, Jacob Thornton
- Developer
- Bootstrap Core Team
- Initial release
- August 19, 2011 ; 14 years ago ( 2011-08-19 )
- Stable release
- 5.3.8 / 25 August 2025 ; 9 months ago ( 25 August 2025 )
- Written in
- HTML , CSS , Less (v3), Sass (v4) and JavaScript
- Platform
- Web platform
- License
- MIT License ( Apache License 2.0 prior to 3.1.0)
- Website
- getbootstrap .com
- Repository
- github .com /twbs /bootstrap
via Wikipedia infobox