Blueshift is leading in Top 10K Sites and Top 100K Sites.
Observer has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Computer & Electronics, People & Society and 22 other categories.
Blueshift is leading in Shopping, Career & Education, Education, Industrial Goods & Services and 10 other categories.
Observer is leading in most countries, including Russia, Canada, Netherlands, United Kingdom and 5 other countries.
Blueshift is leading in India, United States, Viet Nam, South Africa and 2 other countries.