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, Music & Audio, Business & Industry, News & Media and 35 other categories.
Slashdot Widget is leading in Internet & Telecom, Religion & Spirituality, Clothing, Consumer Electronics and one other category.
Qualifio is leading in most countries, including France, Belgium, Netherlands, Spain and 14 other countries.
Slashdot Widget is leading in United States.