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 59,715

328,404

India 21,472

118,978

United Kingdom 22,970

105,671

Germany 18,661

102,329

France 16,342

97,822

Italy 15,027

96,801

Canada 18,322

74,380

Spain 15,467

76,953

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, Sep 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