InsightExpress is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
InsightExpress has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, News & Media, Business & Industry and 87 other categories.
Zeta Search is leading in Online Marketing, Motorsports, Alternative & Natural Medicine and Universities & Colleges.
InsightExpress is leading in most countries, including United States, China, Germany, United Kingdom and 43 other countries.
Zeta Search is leading in Greece.