Radix UI vs siimple
Head-to-head usage across the sites we track.
Top sites by authority
Radix UI · siimple · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
58
0
Open Page Rank 8+
704
1
Open Page Rank 7+
2,503
1
Open Page Rank 6+
4,541
1
Open Page Rank 5+
7,397
1
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
Radix UI · siimple · share of sites in each country using one or the other
United States
61,866
1
India
41,088
2
Brazil
30,607
1
United Kingdom
22,843
1
Germany
20,404
1
Canada
18,587
1
France
18,238
1
Indonesia
17,593
2
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | Radix UI | siimple |
|---|---|---|
| LCP | 2.4 s | 2.5 s |
| INP | 100 ms | 150 ms |
| CLS | 0 | 0 |
| TTFB | 700 ms | 1500 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.