WebTracker is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Widdit has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Religion & Spirituality, Business & Industry and 95 other categories.
WebTracker is leading in Music, General Merchandise, Relationships & Dating and Magazines & E-Zines.
Widdit is leading in most countries, including United States, India, Brazil, Indonesia and 49 other countries.
WebTracker is leading in Japan, Czech Republic and China.