Search engines are digital tools that facilitate online users in finding information on the internet[3]. They operate by scouring the World Wide Web[1], based on specific keywords, and delivering relevant results to the user. This comprehensive list categorizes some of the many search engines available, grouped according to their area of specialization. For instance, Ask.com and Seznam focus on specific content or topics, while IFACnet is used for accountancy-related searches. Business.com and Nexis are structured for business-related queries. Some, like Shodan, are designed for computer-related information. Openverse and Yahoo![4] News are content-specific, while FindFace and Spokeo specialize in people searches. Lastly, HotPads.com and Redfin are geared towards real estate or property searches. Each search engine[2] serves a unique purpose, tailored to meet various users’ information needs.
Search engines, including web search engines, selection-based search engines, metasearch engines, desktop search tools, and web portals and vertical market websites have a search facility for online databases.