What are Spiders, Robots and Crawlers and what are their functions?

[oorjaclinic]

What are Spiders, Robots and Crawlers and what are their functions?

 

[amar478]

Crawler: conjointly referred to as automaton, bot or Spider. These ar programs utilized by search engines to explore the web and mechanically transfer website accessible on websites. They capture the text of the pages and therefore the links found, and therefore modify program users to seek out new pages