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 83 other categories.
Optimatic is leading in Games, Online, Video Games, Home & Garden and 11 other categories.
Vocus is leading in most countries, including United States, United Kingdom, Russia, Canada and 27 other countries.
Optimatic is leading in Algeria, China, Japan, Venezuela and 9 other countries.