There are two types of search engines
1. Hybrid search engines
2. Meta search engines
Google & Yahoo are two main search engines.
Google, Yahoo, Bing are biggest search engines. There are some more search engines like Astalavista, Lycos, Ask, etc.
search engines and directories
Comedies, Tragedies and Histories
The electrical equipment market for internal combustion engines is divided into two categories: original equipment manufacturers (OEMs) and aftermarket.
Drugs and illegal drugsfast and slow
Meta engines search for information on different search pages at the same time. If someone typed in "hummingbirds" they would search on two or three search pages at once.
search engines
A search that provides a list of categories or topics as a starting point is often referred to as a "topic search" or "subject search." This type of search is typically found in databases, library catalogs, or specialized search engines that allow users to explore broad subjects and narrow down to specific areas of interest. It helps users discover relevant information by organizing content into thematic categories.
Spider-Based Search Engines. Directory-Based Search Engines. Link-Based Search Engines.
Human powered directories are special types of search engines, organized into subject categories. The directories are smaller than most search engines and do not contain full text of the webpage they link to. Such directories are good when a user is interested in a general topic of search.
There are primarily three types of search engines: traditional search engines, vertical search engines, and meta-search engines. Traditional search engines like Google and Bing index the entire web and return results based on algorithms. Vertical search engines focus on specific niches or industries, such as medical or academic searches. Meta-search engines aggregate results from multiple search engines to provide a broader range of information.