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Subcategory answer

CSS frameworks

10,536,907

companies run at least one of the 17 technologies in it, 19.3% of 54,527,857 in the index. Landing 12 Sept 2026.

Full-stack CSS frameworks providing grid, layout, and base styles (e.g., Bootstrap-like systems).

Share of the subcategory by month

Bootstrap 86.3%
BootstrapZURB FoundationUIKitTailwind CSSOther

Share of companies running any technology in this subcategory, monthlyof 10,536,907 companies with any of themlanding 12 Sept 2026

Each month is drawn as 100%, so the bands are shares and not counts; a company running two of these technologies is counted in both, and everything past the fourth is folded into Other. The series starts January 2021 because the panel is anchored at 31 Dec 2020

The 345 numbers in this chart
MonthBootstrapZURB FoundationUIKitTailwind CSSOther
2021-0185.2%7.7%3.8%2.4%0.99%
2021-0285.2%7.7%3.8%2.4%0.99%
2021-0385.2%7.7%3.8%2.4%0.99%
2021-0485.2%7.7%3.8%2.4%0.99%
2021-0585.2%7.7%3.8%2.4%0.99%
2021-0685.2%7.7%3.8%2.4%0.99%
2021-0785.2%7.7%3.8%2.4%0.99%
2021-0885.2%7.7%3.8%2.4%0.99%
2021-0985.2%7.7%3.8%2.4%0.99%
2021-1085.2%7.7%3.8%2.4%0.99%
2021-1185.2%7.7%3.8%2.4%0.99%
2021-1285.2%7.7%3.8%2.4%0.99%
2022-0185.2%7.7%3.8%2.4%0.99%
2022-0285.2%7.7%3.8%2.4%0.99%
2022-0385.2%7.7%3.8%2.4%0.99%
2022-0485.2%7.7%3.8%2.4%0.99%
2022-0585.2%7.7%3.8%2.4%0.99%
2022-0685.2%7.7%3.8%2.4%0.99%
2022-0785.2%7.7%3.8%2.4%0.99%
2022-0885.2%7.7%3.8%2.4%0.99%
2022-0985.2%7.7%3.8%2.4%0.99%
2022-1085.2%7.7%3.8%2.4%0.99%
2022-1185.2%7.7%3.8%2.4%0.99%
2022-1285.2%7.7%3.8%2.4%0.99%
2023-0185.2%7.7%3.8%2.4%0.99%
2023-0285.2%7.7%3.8%2.4%0.99%
2023-0385.2%7.7%3.8%2.4%0.99%
2023-0485.2%7.7%3.8%2.4%0.99%
2023-0585.2%7.7%3.8%2.4%0.99%
2023-0685.2%7.7%3.8%2.4%0.99%
2023-0785.2%7.7%3.8%2.4%0.99%
2023-0885.2%7.7%3.8%2.4%0.99%
2023-0985.2%7.7%3.8%2.4%0.99%
2023-1085.2%7.7%3.8%2.4%0.99%
2023-1185.8%6.9%3.8%2.5%1.0%
2023-1285.8%6.9%3.8%2.5%1.0%
2024-0185.8%6.9%3.8%2.5%1.0%
2024-0285.8%6.9%3.8%2.5%1.0%
2024-0385.8%6.9%3.8%2.5%1.0%
2024-0485.8%6.9%3.8%2.5%1.0%
2024-0585.8%6.9%3.8%2.5%1.0%
2024-0685.8%6.9%3.8%2.5%1.0%
2024-0785.8%6.9%3.8%2.5%1.0%
2024-0885.8%6.9%3.8%2.5%1.0%
2024-0985.8%6.9%3.8%2.5%1.0%
2024-1085.8%6.8%3.8%2.5%1.0%
2024-1185.8%6.8%3.8%2.5%1.0%
2024-1285.8%6.8%3.8%2.5%1.0%
2025-0185.8%6.8%3.8%2.5%1.0%
2025-0285.8%6.8%3.8%2.5%1.0%
2025-0385.8%6.8%3.8%2.5%1.0%
2025-0485.8%6.9%3.8%2.6%1.0%
2025-0586.0%6.8%3.8%2.5%0.98%
2025-0686.0%6.8%3.8%2.5%0.98%
2025-0786.0%6.8%3.8%2.5%0.98%
2025-0886.1%6.7%3.8%2.5%0.98%
2025-0986.1%6.7%3.8%2.5%0.98%
2025-1086.1%6.7%3.8%2.5%0.98%
2025-1186.1%6.7%3.8%2.5%0.98%
2025-1286.1%6.7%3.8%2.5%0.98%
2026-0186.2%6.6%3.8%2.5%0.98%
2026-0286.2%6.6%3.8%2.5%0.98%
2026-0386.3%6.4%3.7%2.6%1.0%
2026-0486.3%6.4%3.7%2.6%1.0%
2026-0586.3%6.4%3.7%2.6%1.0%
2026-0686.3%6.4%3.7%2.6%1.0%
2026-0786.3%6.4%3.7%2.6%1.0%
2026-0886.3%6.4%3.7%2.6%1.0%
2026-0986.3%6.4%3.7%2.6%1.0%

The technologies ranked in CSS frameworks

Companiesof 10,536,907 with any of themlanding 12 Sept 2026

#
Technology
Vendor
Companies
Share
1
Bootstrap
9,358,220
88.8%
2
Tailwind Labs
494,006
4.7%
3
ZURB
445,945
4.2%
4
YOOtheme
410,095
3.9%
5
W3Schools
29,270
0.28%
6
Pure CSS
19,519
0.19%
7
Semantic UI Project
14,612
0.14%
8
Bulma
10,960
0.10%
9
Pico CSS
1,580
0.01%
10
Milligram
1,385
0.01%
11
Metro UI
323
<0.01%
12
Simple.css
118
<0.01%
13
Augmented UI
33
<0.01%
14
Panda CSS
11
no share
15
Basil.css
1
no share

15 of 17 technologiesa company running two of them is counted in both, so the shares do not sum to 100%under 20 companies no share is published

2 of the 10 most detected technologies here sit under the publication gate on detector quality of 0.90, so they are listed rather than ranked: Automatic.css 16,972, Amaze UI 3,171.