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, Clothing and 14 other categories.
Unister is leading in Travel, Tourism, Finance, Investing and 2 other categories.
Nextag ROI Optimizer is leading in most countries, including United States, United Kingdom, Canada, Taiwan and one other country.
Unister is leading in Germany, Austria, Switzerland and Ukraine.