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ProveSource is leading in Top 100K Sites, Top 1M Sites and The Entire Web.
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Opentracker is leading in Top 10K Sites.
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ProveSource has better usage coverage in more websites categories. Including Computers Electronics & Technology, Business & Consumer Services, Lifestyle, Health and 18 other categories.
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Opentracker is leading in Heavy Industry & Engineering and Law & Government.
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ProveSource is leading in most countries, including United States, Italy, United Kingdom, Australia and 105 other countries.
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Opentracker is leading in Cyprus, Sri Lanka, Qatar, Iraq and 2 other countries.