ClearSaleing is leading in Top 100K Sites and Top 1M Sites.
ClearSaleing has better usage coverage in more websites categories. Including Travel, Shopping, Business & Industry, Finance and 2 other categories.
Observer is leading in Arts & Entertainment, Computer & Electronics, People & Society and Sports.
ClearSaleing is leading in most countries, including United States, Canada, France, United Kingdom and 13 other countries.
Observer is leading in Russia, Brazil, Poland, Portugal and one other country.