Experian Marketing Services is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Experian Marketing Services has better usage coverage in more websites categories. Including Autos & Vehicles, Arts & Entertainment, Car Buying, People & Society and 23 other categories.
Fathom SEO is leading in Business & Industry, Health, Senior Health, Industrial Goods & Services and 13 other categories.
Experian Marketing Services is leading in most countries, including United States, United Kingdom, Brazil, Japan and 11 other countries.
Fathom SEO is leading in South Africa and Mexico.