Backbone.js vs GSAP

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

Top sites by authority

Backbone.js · GSAP · 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

Backbone.js · GSAP · share of sites in each country using one or the other

United States 60,045

336,193

India 21,965

120,243

United Kingdom 22,711

105,254

Germany 18,831

103,146

France 16,041

94,934

Italy 14,393

90,969

Canada 18,146

75,336

Brazil 11,292

81,278

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.

Sites that switched

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

All Backbone.js sites · All GSAP sites