Hello Bar
406 websites

Hello Bar offers both free and paid options

http://www.hellobar.com/

The Hello Bar is a customizable, relatively unobtrusive bar that sits at the top of a website and directs visitors with a call to action. For example, the bar on Gary Vaynerchuk’s website prompts visitors to “Circle me up on Google+!”, whil...

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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 ...

Market Share by Top Websites

1 Hello Bar is leading in The Entire Web.

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

Websites Categories

1 Hello Bar has better usage coverage in more websites categories. Including Computers Electronics & Technology, Business & Consumer Services, Science & Education, Community & Society and 15 other categories.

2 iQ Poll is leading in News & Media, Arts & Entertainment and Adult.

Geography

1 Hello Bar is leading in most countries, including United States, India, United Kingdom, Canada and 49 other countries.

2 iQ Poll is leading in Mexico, Dominican Republic, Jordan and Nigeria.