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+
6
1
Open Page Rank 8+
71
3
Open Page Rank 7+
289
10
Open Page Rank 6+
499
19
Open Page Rank 5+
761
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
6,206
146
India
1,943
69
Canada
1,828
92
United Kingdom
1,771
66
Australia
1,263
56
Mexico
1,149
60
France
1,016
48
Germany
1,003
48
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 |
| TTFB | 900 ms | 800 ms |
Median site's p75 values from the Chrome UX Report, Aug 2026. Lower is better; green meets Google's "good" threshold. This describes the sites that use each technology, not the technology's own overhead.