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, Consumer Electronics, Clothing, Sports and 45 other categories.
Vertster is leading in Internet & Telecom, Search Engine, Computer Security, Agriculture & Forestry and 2 other categories.
Sitespect is leading in most countries, including United States, Netherlands, Belgium, Australia and 14 other countries.
Vertster is leading in Poland and China.