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 88 other categories.
Zeta Search is leading in Online Marketing, Motorsports, Alternative & Natural Medicine, Banking and one other category.
InsightExpress is leading in most countries, including United States, China, Canada, United Kingdom and 40 other countries.
Zeta Search hasn't got a lead over InsightExpress in any country.