The Copernic search agent, although not exactly a web crawler in the traditional sense of the term, has enough similarities to merit inclusion. Rather than indexing the web itself, it is an “intelligent” search tool that queries multiple search engines and processes what it receives to present filtered, usable results from which much of the useless material has been removed. It perhaps more closely resembles a meta search engine than a crawler. A number of additional functions are included that further improve the usability of the results:
The Copernic agent is available in three versions. The "basic" version is a free download, and offers standard searching and reporting capabilities. The "personal" version provides greater facilities for customization and personalization along with advanced result management capabilities. The "professional" version comes closest to the functionality of a web crawler: in addition to the basic and personal functions, it will track new search results in the background as they become available, track changes in web page content, and provides powerful tools for the analysis of search results.
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