Flutter vs ZURB Foundation
Head-to-head usage across the sites we track.
Top sites by authority
Flutter · ZURB Foundation · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
10
63
Open Page Rank 8+
53
996
Open Page Rank 7+
135
3,303
Open Page Rank 6+
223
5,967
Open Page Rank 5+
358
9,961
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Flutter · ZURB Foundation · share of sites in each country using one or the other
United States
1,647
86,282
United Kingdom
843
29,226
Germany
1,012
23,949
Canada
662
23,311
India
1,742
21,706
France
757
19,589
Netherlands
666
16,523
Italy
660
15,964
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Flutter | ZURB Foundation |
|---|---|---|
| LCP | 1.9 s | 1.8 s |
| INP | 125 ms | 75 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 900 ms |
Median site's p75 values from the Chrome UX Report, Sep 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.