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, Arts & Entertainment and 56 other categories.
Opta Widget is leading in Sports, Soccer, News & Media, Newspapers and 19 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 41 other countries.
Vovici is leading in United States, India, Canada, China and 17 other countries.