Rudderstack vs Simon
Head-to-head usage across the sites we track.
Top sites by authority
Rudderstack · Simon · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
3
1
Open Page Rank 8+
71
3
Open Page Rank 7+
293
10
Open Page Rank 6+
492
18
Open Page Rank 5+
752
32
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Rudderstack · Simon · share of sites in each country using one or the other
United States
6,716
158
India
2,139
78
Canada
2,046
103
United Kingdom
2,067
73
Australia
1,401
61
Mexico
1,293
72
France
1,236
62
Germany
1,131
52
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Rudderstack | Simon |
|---|---|---|
| LCP | 1.9 s | 2.3 s |
| INP | 75 ms | 125 ms |
| CLS | 0 | 0.05 |
| TTFB | 1000 ms | 700 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.