Bootstrap
Updated on Apr 15, 2025
Bootstrap is the most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.
| Release | Release Date | Core Support | Active Support | Extended Support | Latest |
|---|---|---|---|---|---|
| 5 (LTS) | May 05, 2021 (4 years ago) | Yes | Yes | 5.3.5 (Apr 04, 2025) | |
| 4 (LTS) | Jan 18, 2018 (7 years ago) | Jan 01, 2023 (2 years ago) | Nov 01, 2021 (3 years ago) | Yes | 4.6.2 (Jul 19, 2022) |
| 3 (LTS) | Aug 19, 2013 (11 years ago) | Jul 24, 2019 (5 years ago) | Sep 05, 2016 (8 years ago) | Yes | 3.4.1 (Feb 13, 2019) |
| 2 | Jan 31, 2012 (13 years ago) | Aug 19, 2013 (11 years ago) | Aug 19, 2013 (11 years ago) | 2.3.2 (Jul 26, 2013) |
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