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+
8
66
Open Page Rank 8+
53
1,019
Open Page Rank 7+
137
3,398
Open Page Rank 6+
221
6,143
Open Page Rank 5+
352
10,238
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
1,750
97,282
United Kingdom
869
33,264
Germany
1,091
27,418
Canada
700
26,635
India
1,821
24,995
France
852
23,439
Netherlands
723
18,526
Italy
722
17,777
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 | 800 ms |
Median site's p75 values from the Chrome UX Report, Jun 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.