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+
7
1
Open Page Rank 8+
75
3
Open Page Rank 7+
287
10
Open Page Rank 6+
493
17
Open Page Rank 5+
768
30
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
6,230
148
India
1,933
68
Canada
1,876
88
United Kingdom
1,846
63
Australia
1,242
55
Mexico
1,154
59
Spain
1,070
48
Germany
1,019
46
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Rudderstack | Simon |
|---|---|---|
| LCP | 1.8 s | 2.2 s |
| INP | 75 ms | 150 ms |
| CLS | 0 | 0 |
| TTFB | 900 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.