Adcrowd
644 websites

Adcrowd offers both free and paid options

https://www.adcrowd.com/en

Adcrowd helps companies with the optimal use of online (re) targeting campaigns. Through a unique self-service platform, entrepreneurs and marketers get direct access to the largest ad auctions.

VS

centralTag
859 websites

centralTag costs money

https://www.centraltag.com/commercial/policy/index.action

Central Tag is a retargeting Service

Market Share by Top Websites

1 centralTag is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

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

Websites Categories

1 centralTag has better usage coverage in more websites categories. Including Games, Arts & Entertainment, Science & Education, Computers Electronics & Technology and 10 other categories.

2 Adcrowd is leading in E-commerce & Shopping, Home & Garden, Sports, Lifestyle and 4 other categories.

Geography

1 centralTag is leading in most countries, including United States, Germany, Spain, Italy and 63 other countries.

2 Adcrowd is leading in Netherlands, Belgium, Austria, Finland and 2 other countries.