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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OpinionLab
596 websites

OpinionLab costs money

http://www.opinionlab.com/

OpinionLab is a omnichannel Voice of Customer (VoC) feedback solution.

Market Share by Top Websites

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

2 In terms of market share, Hello Bar is clearly lagging behind, losing to OpinionLab in all segments.

Websites Categories

1 OpinionLab has better usage coverage in more websites categories. Including Finance, Computers Electronics & Technology, Travel & Tourism, Lifestyle and 9 other categories.

2 Hello Bar is leading in Business & Consumer Services, Science & Education, Community & Society, Arts & Entertainment and 6 other categories.

Geography

1 Hello Bar is leading in most countries, including India, Netherlands, Russia, Belgium and 38 other countries.

2 OpinionLab is leading in United States, Canada, United Kingdom, Japan and 19 other countries.