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 65 other categories.
Opta Widget is leading in Sports, Soccer, News & Media, Newspapers and 10 other categories.
Opta Widget is leading in most countries, including Spain, United Kingdom, Italy, Australia and 35 other countries.
Vovici is leading in United States, China, India, Canada and 15 other countries.