Sitespect is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Sitespect has better usage coverage in more websites categories. Including Shopping, Clothing, Consumer Electronics, Sports and 38 other categories.
Vertster is leading in Computer Hardware, Internet & Telecom, Relationships & Dating, Womens Interests and 2 other categories.
Sitespect is leading in most countries, including United States, Netherlands, Belgium, Canada and 9 other countries.
Vertster is leading in Portugal.