Google Programmable Search Engine

Google Programmable Search Engine (formerly known as Google Custom Search and Google Co-op) 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. == Services == === Custom Search Engine === Released on October 23, 2006, Google Custom Search Engine started as a way to let webmasters index and provide search for their own sites.

Source: Wikipedia — Google Programmable Search Engine (CC BY-SA 4.0)