The Best CSS Frameworks

Based on github stars

Top 40 Most Popular CSS Frameworks
by number of GitHub stars

Filtering projects by: General Purpose X

Rank Change 2025 Jun Project Features Stars Activity Rating
1 - 1 Bootstrap General Purpose SCSS 174,293 9.2 25.42%
4 - 4 Semantic UI General Purpose LESS 51,079 2.2 7.45%
5 - 5 Bulma General Purpose SASS 50,072 5.1 7.30%
7 - 7 Foundation General Purpose SCSS 29,761 7.6 4.34%
10 - 10 UI kit General Purpose SCSS LESS 18,534 9.4 2.70%
11 - 11 Primer General Purpose SCSS 12,959 8.3 1.89%
12 - 12 tachyons General Purpose CSS 11,711 3.0 1.71%
13 - 13 Spectre.css General Purpose SCSS 11,335 0.0 1.65%
24 - 24 Fomantic-UI General Purpose LESS 3,756 9.1 0.55%
31 - 31 Blaze UI General Purpose SCSS 1,560 3.5 0.23%
33 - 33 Cirrus General Purpose CSS 1,429 6.1 0.21%
34 - 34 Base General Purpose SCSS LESS 1,323 0.0 0.19%
37 ↑ 38 PatternFly General Purpose SCSS LESS 800 9.5 0.12%
38 ↓ 37 turretcss General Purpose CSS 799 0.0 0.12%
39 - 39 HiQ General Purpose PostCSS 329 3.4 0.05%
  • Rating - the percentage of stars of a particular project from the total number.
  • Activity - a relative number between 0 and 10 representing the commits activity of a project.
    9+ meaning that the project is amongst the top 10% of most actively developed projects.
    5+ meaning that the project is amongst the top 50% of most active projects.

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