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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UpSellit
3,030 websites

UpSellit offers both free and paid options

http://www.upsellit.com

UpSellit provides eBusinesses with pay-for-performance site abandonment recovery solutions that increase conversions with a combination of web analytics, lead generation, and consumer engagement technologies. Founded in 2005, UpSellit l...

Market Share by Top Websites

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

2 UpSellit is leading in Top 10K Sites.

Websites Categories

1 Google Programmable Search Engine has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Arts & Entertainment, Law & Government and 19 other categories.

2 UpSellit is leading in Lifestyle.

Geography

1 Google Programmable Search Engine is leading in most countries, including United States, Japan, India, France and 133 other countries.

2 UpSellit is leading in Angola, Barbados, Cuba, French Polynesia and 2 other countries.