Segment is leading in Top 100K Sites and Top 1M Sites.
Topsy has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Business & Industry, Internet & Telecom and 168 other categories.
Segment is leading in Social Network, Mobile Developers, Web Design, Email and 13 other categories.
Topsy is leading in most countries, including Russia, Japan, Brazil, Spain and 66 other countries.
Segment is leading in United States, United Kingdom, India, Greece and 37 other countries.