Backbone.js
781,951 websites

Backbone.js is free to use

http://backbonejs.org/

Backbone.js gives structure to web applications by providing models with key-value binding and custom events, collections with a rich API of enumerable functions, views with declarative event handling, and connects it all to your existing A...

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Masonry
1,943,014 websites

Masonry is free to use

http://masonry.desandro.com/

Cascading grid layout library

Market Share by Top Websites

1 Masonry is leading in Top 100K Sites, Top 1M Sites and The Entire Web.

2 Backbone.js is leading in Top 10K Sites.

Websites Categories

1 Masonry has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Health, Food & Drink and 15 other categories.

2 Backbone.js is leading in Arts & Entertainment, Games, Adult, Hobbies & Leisure and one other category.

Geography

1 Masonry is leading in most countries, including United States, Germany, Italy, France and 160 other countries.

2 Backbone.js is leading in Virgin Islands and U.S..