AppNexus vs BuySellAds
Head-to-head usage across the sites we track.
Top sites by authority
AppNexus · BuySellAds · how many of each technology's sites sit in the web's highest authority tiers
Open Page Rank 9+
47
6
Open Page Rank 8+
689
27
Open Page Rank 7+
2,812
92
Open Page Rank 6+
5,269
146
Open Page Rank 5+
8,688
213
Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.
By country
AppNexus · BuySellAds · share of sites in each country using one or the other
United States
63,153
672
United Kingdom
28,394
413
Canada
28,277
347
India
21,189
661
France
20,122
361
Germany
20,086
373
Australia
18,205
276
Spain
17,003
296
Audience countries from the Chrome UX Report, top markets of either technology.
Real user performance
| Metric | AppNexus | BuySellAds |
|---|---|---|
| LCP | 1.9 s | 1.9 s |
| INP | 100 ms | 50 ms |
| CLS | 0.05 | 0 |
| TTFB | 800 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.