In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to Vertical Leap in all segments.
Nextag ROI Optimizer has better usage coverage in more websites categories. Including Shopping, Business & Industry, Marketing & Advertising, Clothing and 20 other categories.
Vertical Leap is leading in Tourism and Travel.
Nextag ROI Optimizer is leading in most countries, including United States, Germany, United Kingdom, France and 7 other countries.
Vertical Leap hasn't got a lead over Nextag ROI Optimizer in any country.