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, Nursery & Playroom and 8 other categories.
Vocus is leading in most countries, including United States, Canada, India, United Kingdom and 23 other countries.
Optimatic is leading in Germany, Argentina, Turkey, Venezuela and 20 other countries.