In terms of market share, Fathom SEO is clearly lagging behind, losing to Webclicktracker in all segments.
Webclicktracker has better usage coverage in more websites categories. Including Business & Industry, Industrial Goods & Services, Construction & Maintenance, Shopping and 19 other categories.
Fathom SEO is leading in Health, Senior Health, Computer & Electronics, People & Society and 15 other categories.
Webclicktracker is leading in most countries, including United States, China, Canada, Netherlands and 13 other countries.
Fathom SEO hasn't got a lead over Webclicktracker in any country.