In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to Unister in all segments.
Nextag ROI Optimizer has better usage coverage in more websites categories. Including Shopping, Business & Industry, Marketing & Advertising, Health and 21 other categories.
Unister is leading in Travel, Tourism, Autos & Vehicles, Car Buying and one other category.
Nextag ROI Optimizer is leading in most countries, including United States, France, Japan, Indonesia and 6 other countries.
Unister is leading in Germany, Austria, Switzerland, Italy and 4 other countries.