Sophus3 is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Sophus3 has better usage coverage in more websites categories. Including Autos & Vehicles, Makes & Models, Business & Industry, Automotive Industry and 32 other categories.
Zeta Search hasn't got a lead over Sophus3 in any websites category.
Sophus3 is leading in most countries, including United Kingdom, Italy, France, Germany and 53 other countries.
Zeta Search is leading in India and Singapore.