In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to WordStream in all segments.
WordStream has better usage coverage in more websites categories. Including Business & Industry, People & Society, Relationships & Dating, Autos & Vehicles and 54 other categories.
Nextag ROI Optimizer is leading in Shopping, Marketing & Advertising, Clothing, Home & Garden and 8 other categories.
WordStream is leading in most countries, including United States, United Kingdom, South Africa, Mexico and 10 other countries.
Nextag ROI Optimizer is leading in Germany, Ecuador, France and Austria.