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, Industrial Goods & Services, Health, Senior Health and 18 other categories.

2 Nextag ROI Optimizer is leading in Shopping, Marketing & Advertising, Home & Garden, Clothing and 10 other categories.


1 Nextag ROI Optimizer is leading in most countries, including Germany, France, Gambia and Japan.

2 Fathom SEO is leading in United States.