Nextag ROI Optimizer is leading in Top 1M Sites.
Nextag ROI Optimizer has better usage coverage in more websites categories. Including Shopping, Business & Industry, Marketing & Advertising, Health and 17 other categories.
Vertical Leap is leading in Tourism and Travel.
Nextag ROI Optimizer is leading in most countries, including United States, France, Germany, Viet Nam and one other country.
Vertical Leap is leading in United Kingdom.