Market Share by Top Websites

2 In terms of market share, Fathom SEO is clearly lagging behind, losing to Nextag ROI Optimizer in all segments.

Websites Categories

1 Fathom SEO has better usage coverage in more websites categories. Including Business & Industry, Health, Senior Health, Industrial Goods & Services and 19 other categories.

2 Nextag ROI Optimizer is leading in Shopping, Marketing & Advertising, Clothing, Home & Garden and 14 other categories.


1 Nextag ROI Optimizer is leading in most countries, including Germany, Australia, Ecuador, France and 3 other countries.

2 Fathom SEO is leading in United States, Hong Kong, Japan, Philippines and one other country.