In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to nPario in all segments.
Nextag ROI Optimizer has better usage coverage in more websites categories. Including Shopping, Business & Industry, Marketing & Advertising, Health and 23 other categories.
nPario is leading in Arts & Entertainment and Music & Audio.
Nextag ROI Optimizer is leading in most countries, including United States, France, Germany, Greece and 3 other countries.
nPario hasn't got a lead over Nextag ROI Optimizer in any country.