In terms of market share, Fathom SEO is clearly lagging behind, losing to Nextag ROI Optimizer in all segments.
Fathom SEO has better usage coverage in more websites categories. Including Business & Industry, Senior Health, Health, Industrial Goods & Services and 18 other categories.
Nextag ROI Optimizer is leading in Shopping, Home & Garden, Marketing & Advertising, Internet & Telecom and 16 other categories.
Nextag ROI Optimizer is leading in most countries, including France, Germany, Japan, Austria and one other country.
Fathom SEO is leading in United States, Brazil and Australia.