Market Share by Top Websites

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

2 In terms of market share, Topsy is clearly lagging behind, losing to DoubleVerify in all segments.

Websites Categories

1 Topsy has better usage coverage in more websites categories. Including People & Society, Arts & Entertainment, Business & Industry, Internet & Telecom and 171 other categories.

2 DoubleVerify is leading in Technology News, Computer Security, Search Engine, Military & Defense and 9 other categories.


1 Topsy is leading in most countries, including Brazil, Russia, Japan, Portugal and 68 other countries.

2 DoubleVerify is leading in United States, United Kingdom, Germany, Poland and 50 other countries.