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, Home & Garden and 20 other categories.
Unister is leading in Travel, Tourism, Airlines & Airports, Search Engine and 2 other categories.
Unister is leading in most countries, including Germany, Switzerland, Austria, China and 6 other countries.
Nextag ROI Optimizer is leading in United States, France, United Kingdom, Sweden and 5 other countries.