Optimatic is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Six Apart Advertising has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Computer & Electronics and 58 other categories.
Optimatic is leading in Games, Internet & Telecom, Marketing & Advertising, Online and 18 other categories.
Optimatic is leading in most countries, including United States, Venezuela, Peru, Russia and 19 other countries.
Six Apart Advertising is leading in India, Germany, Brazil, Philippines and 4 other countries.