Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Vocus has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, People & Society, News & Media and 90 other categories.
Optimatic is leading in Games, Video Games, Online, Fashion & Modeling and 5 other categories.
Vocus is leading in most countries, including United States, India, Canada, United Kingdom and 21 other countries.
Optimatic is leading in Algeria, Brazil, Poland, Italy and 7 other countries.