Sentry vs UserRules

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

Detections for UserRules end in Jul 2022. The fingerprint catalog behind our crawls no longer carries that technology as its own entry, usually because it was retired or split into more specific ones, so its figure is the last recorded and is not directly comparable with a currently tracked technology.

Top sites by authority

Sentry · UserRules · 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

Sentry · UserRules · share of sites in each country using one or the other

United States 323,523

3

United Kingdom 95,135

3

India 78,278

1

Canada 75,350

3

Brazil 73,076

1

Germany 70,758

2

France 65,757

1

Japan 51,705

1

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, 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.

All Sentry sites · All UserRules sites