Optimost is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Optimost has better usage coverage in more websites categories. Including Finance, Business & Industry, Insurance, Travel and 38 other categories.
Zeta Search is leading in Equestrian, Motorsports and Construction & Maintenance.
Optimost is leading in most countries, including United States, United Kingdom, Spain, France and 36 other countries.
Zeta Search is leading in Philippines.