Opta Widget is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Opta Widget has better usage coverage in more websites categories. Including Sports, Soccer, News & Media, Arts & Entertainment and 37 other categories.
Qualifio is leading in Music & Audio, Magazines & E-Zines, Travel, Home & Garden and 17 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 51 other countries.
Qualifio is leading in France, Belgium, Netherlands, Switzerland and 2 other countries.