Qualifio is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Qualifio has better usage coverage in more websites categories. Including Arts & Entertainment, News & Media, Music & Audio, Business & Industry and 25 other categories.
Slashdot Widget is leading in Internet & Telecom, Shopping, Clothing, Religion & Spirituality and 4 other categories.
Qualifio is leading in most countries, including France, Belgium, Netherlands, Spain and 7 other countries.
Slashdot Widget is leading in Indonesia and United States.