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 20 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 42 other countries.
Vovici is leading in United States, Canada, India, China and 14 other countries.