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, People & Society, Insurance, Business & Industry and 61 other categories.
Zeta Search is leading in Investing, Equestrian, Motorsports, Business Services and one other category.
Optimost is leading in most countries, including United States, United Kingdom, India, Australia and 38 other countries.
Zeta Search is leading in Bangladesh, Philippines and Slovenia.