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 84 other categories.
Optimatic is leading in Games, Video Games, Online, Fashion & Modeling and 10 other categories.
Vocus is leading in most countries, including United States, United Kingdom, Canada, Russia and 22 other countries.
Optimatic is leading in Israel, Venezuela, Germany, Paraguay and 14 other countries.