AdAction
3,092 websites

AdAction is free to use

http://www.couchbase.com/

the nations oldest independent liberal political organization, dedicated to individual liberty and building economic and social justice at home and abroad.

VS

Parrable
3,409 websites

Parrable costs money

https://www.parrable.com/

Identifies each device across all browsers and apps without using personally identifiable information.

Market Share by Top Websites

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

2 AdAction is leading in Top 1M Sites.

Websites Categories

1 Parrable has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Community & Society, Arts & Entertainment and 20 other categories.

2 AdAction hasn't got a lead over Parrable in any websites category.

Geography

1 Parrable is leading in most countries, including China, United States, Brazil, United Kingdom and 127 other countries.

2 AdAction is leading in Norway, Sweden, Denmark, Estonia and 2 other countries.