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 64,969

374,319

India 24,399

135,440

United Kingdom 24,890

119,878

Germany 20,838

113,182

France 18,949

112,048

Italy 16,339

105,125

Canada 20,229

85,143

Brazil 12,175

87,855

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 Backbone.js sites · All GSAP sites