Opta Widget is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Vovici has better usage coverage in more websites categories. Including People & Society, Business & Industry, Career & Education, Education and 58 other categories.
Opta Widget is leading in Sports, Soccer, News & Media, Newspapers and 21 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 43 other countries.
Vovici is leading in United States, India, Canada, China and 11 other countries.