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 41 other categories.
Slashdot Widget is leading in Internet & Telecom, Clothing, Religion & Spirituality, Consumer Electronics and 3 other categories.
Qualifio is leading in most countries, including France, Belgium, Spain, Netherlands and 15 other countries.
Slashdot Widget is leading in Peru.