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Spin JS is leading in The Entire Web.
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html5shiv is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
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Spin JS has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Arts & Entertainment, Travel & Tourism and 19 other categories.
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html5shiv is leading in Business & Consumer Services.
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Spin JS is leading in most countries, including United States, Russia, Germany, Italy and 102 other countries.
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html5shiv is leading in Japan, India, Brazil, Turkey and 53 other countries.