iQ Poll
123 websites

iQ Poll is free to use

http://www.pewresearch.org/quiz/the-news-iq-quiz/

When you finish, you will be able to compare your News IQ with the average ... It conducts public opinion polling, demographic research, media content analysis ...

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Strands Recommender
20 websites

Strands Recommender offers both free and paid options

http://recommender.strands.com/

Personalize your customers experience from start to finish with the Strands Recommender.

Market Share by Top Websites

2 iQ Poll is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

Websites Categories

1 iQ Poll has better usage coverage in more websites categories. Including News & Media, Arts & Entertainment, Adult, Community & Society and 7 other categories.

2 Strands Recommender is leading in Business & Consumer Services, Finance, Home & Garden and Jobs & Career.

Geography

1 iQ Poll is leading in most countries, including United States, India, Mexico, Philippines and 10 other countries.

2 Strands Recommender is leading in Israel and United Arab Emirates.