Rich is leading in Top 100K Sites and Top 1M Sites.
Zeta Search has better usage coverage in more websites categories. Including Business & Industry, Internet & Telecom, Online Marketing, Health and 16 other categories.
Rich is leading in Arts & Entertainment, People & Society, TV & Video, Music & Audio and 11 other categories.
Rich is leading in most countries, including Sweden, Norway, Bulgaria, Denmark and 4 other countries.
Zeta Search is leading in United States, Slovenia, Malta, India and 2 other countries.