Market Share by Top Websites

1 Act-On is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 Despite its recent growth, Opentracker is still behind Act-On in all market share segments.

Websites Categories

1 Act-On has better usage coverage in more websites categories. Including Business & Industry, Computer & Electronics, Software, Marketing & Advertising and 104 other categories.

2 Opentracker is leading in Shopping, Arts & Entertainment, People & Society, Flowers and 75 other categories.


1 Act-On is leading in most countries, including United States, United Kingdom, India, Canada and 78 other countries.

2 Opentracker is leading in Indonesia, Viet Nam, Egypt, Latvia and 34 other countries.