Market Share by Top Websites

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

2 In terms of market share, Nextag ROI Optimizer is clearly lagging behind, losing to WhosOn in all segments.

Websites Categories

1 WhosOn has better usage coverage in more websites categories. Including Business & Industry, Shopping, Computer & Electronics, Internet & Telecom and 126 other categories.

2 Nextag ROI Optimizer is leading in Nursery & Playroom.


1 WhosOn is leading in most countries, including United Kingdom, United States, Germany, Canada and 68 other countries.

2 Nextag ROI Optimizer hasn't got a lead over WhosOn in any country.