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 52 other categories.
Optimatic is leading in Games, Internet & Telecom, Marketing & Advertising, Online and 20 other categories.
Optimatic is leading in most countries, including United States, Israel, Peru, United Kingdom and 21 other countries.
Six Apart Advertising is leading in India, Russia, Congo, Finland and 5 other countries.