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2. Web crawler - Wikipedia

   en.wikipedia.org/wiki/Web_crawler

   Web site administrators typically examine their Web servers' log and use the user agent field to determine which crawlers have visited the web server and how often. The user agent field may include a URL where the Web site administrator may find out more information about the crawler. Examining Web server log is tedious task, and therefore some ...

3. Heritrix - Wikipedia

   en.wikipedia.org/wiki/Heritrix

   Heritrix is a web crawler designed for web archiving.It was written by the Internet Archive.It is available under a free software license and written in Java.The main interface is accessible using a web browser, and there is a command-line tool that can optionally be used to initiate crawls.

4. Web scraping - Wikipedia

   en.wikipedia.org/wiki/Web_scraping

   Web scraping is the process of automatically mining data or collecting information from the World Wide Web. It is a field with active developments sharing a common goal with the semantic web vision, an ambitious initiative that still requires breakthroughs in text processing, semantic understanding, artificial intelligence and human-computer interactions.

5. Web content management system - Wikipedia

   en.wikipedia.org/wiki/Web_content_management_system

   Automated templates Create standard templates (usually HTML and XML) that users can apply to new and existing content, changing the appearance of all content from one central place. Access control Some WCMS systems support user groups, which control how registered users interact with the site. A page on the site can be restricted to one or more ...

6. 80legs - Wikipedia

   en.wikipedia.org/wiki/80legs

   80legs has been criticised by numerous site owners for its technology effectively acting as a Distributed Denial of Service attack and not obeying robots.txt. [ 5 ] [ 6 ] [ 7 ] As the average webmaster is not aware of the existence of 80legs, blocking access to its crawler can only be done when it is already too late, the server DDoSed, and the ...

7. Distributed web crawling - Wikipedia

   en.wikipedia.org/wiki/Distributed_web_crawling

   Distributed web crawling is a distributed computing technique whereby Internet search engines employ many computers to index the Internet via web crawling. Such systems may allow for users to voluntarily offer their own computing and bandwidth resources towards crawling web pages.