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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Mopinion
32 websites

Mopinion costs money

http://mopinionlabs.co.uk/

Collect, analyse and manage customer feedback from every touch point.

Market Share by Top Websites

1 Hello Bar is leading in Top 10K Sites, Top 1M Sites and The Entire Web.

2 Mopinion is leading in 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 17 other categories.

2 Mopinion is leading in Jobs & Career and News & Media.

Geography

1 Hello Bar is leading in most countries, including United States, India, United Kingdom, Canada and 48 other countries.

2 Mopinion is leading in Slovakia.