AppNexus vs Rubicon Project

Head-to-head usage across the sites we track.

Top sites by authority

AppNexus · Rubicon Project · how many of each technology's sites sit in the web's highest authority tiers

Open Page Rank scores 0 to 10 from the open web link graph; 9+ covers only a few hundred domains worldwide.

By country

AppNexus · Rubicon Project · share of sites in each country using one or the other

United States 63,153

46,102

Canada 28,277

25,623

United Kingdom 28,394

24,657

India 21,189

17,153

Germany 20,086

16,282

France 20,122

15,110

Australia 18,205

16,969

Spain 17,003

13,126

Audience countries from the Chrome UX Report, top markets of either technology.

Real user performance

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.

Sites that switched

Domains that dropped one technology and adopted the other within about a year, data nobody else gives away free.

All AppNexus sites · All Rubicon Project sites