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 36 other categories.
Qualifio is leading in Music & Audio, Shopping, Travel, Tourism and 16 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, United States and 47 other countries.
Qualifio is leading in France, Belgium, Netherlands and Romania.