Opta Widget 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, Health, TV & Video and 23 other categories.
Opta Widget is leading in Sports, Soccer, News & Media, Business & Industry and 19 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 41 other countries.
Qualifio is leading in France, Belgium, Netherlands, Switzerland and 2 other countries.