TruEffect is leading in Top 100K Sites and Top 1M Sites.
TruEffect has better usage coverage in more websites categories. Including News & Media, People & Society, Business & Industry, Arts & Entertainment and 44 other categories.
Zeta Search is leading in Online Marketing, Investing, Alternative & Natural Medicine, Financial Management and 5 other categories.
TruEffect is leading in most countries, including United States, Japan, Italy, Russia and 14 other countries.
Zeta Search is leading in Canada, India and Philippines.