Google Programmable Search Engine
16,105 websites

Google Programmable Search Engine is free to use

http://www.google.com/cse/

Google Programmable Search Engine is a platform provided by Google that allows web developers to feature specialized information in web searches, refine and categorize queries and create customized search engines, based on Google Search.

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VKontakte Widgets
13,285 websites

VKontakte Widgets is free to use

http://vk.com/developers.php?p=Comments

The VK comments widget lets you add comments to your site in a matter of minutes. Installing the ... Read more on the advantages of the VK comment widget. 1.

Market Share by Top Websites

1 Google Programmable Search Engine is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, VKontakte Widgets is clearly lagging behind, losing to Google Programmable Search Engine in all segments.

Websites Categories

1 VKontakte Widgets has better usage coverage in more websites categories. Including Science & Education, Arts & Entertainment, Health, Vehicles and 9 other categories.

2 Google Programmable Search Engine is leading in Computers Electronics & Technology, Law & Government, Community & Society, Travel & Tourism and 7 other categories.

Geography

1 Google Programmable Search Engine is leading in most countries, including United States, Japan, India, France and 122 other countries.

2 VKontakte Widgets is leading in Russia, Belarus, Ukraine, Kazakhstan and 14 other countries.