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This is simple link checker. It can crawl any site and help to find broken links. It also having download CSV report option.The CSV file includes url ,parent page url and status of page [broken or ok]. It is be very useful for search engine optimization.
Crawler.NET is a component-based distributed framework for web traversal intended for the .NET platform. It comprises of loosely coupled units each realizing a specific web crawler task. The main design goals are efficiency and flexibility.
WebNews Crawler is a specific web crawler (spider, fetcher) designed to acquire and clean news articles from RSS and HTML pages. It can do a site specific extraction to extract the actual news content only, filtering out the advertising and other cruft.
Aracnis is a Java based framework for building distributed web spiders. These spiders can be used to accomplish a variety of tasks, for example, screen-scraping and link integrity checking.
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J-Obey is a Java Library/package, which allows people writing their own crawlers to have a stable Robots.txt parser, if you are writing a web crawler of some sort you can use J-Obey to take out the hassle of writing a Robots.txt parser/intrepreter.
Funnel is a project for use on intranets, or selected sites on the Internet to gather together and index information from several different sources and make it available through a sane, usable interface.
Larbin is a Web crawler intended to fetch a large number of Web pages, it should be able to fetch more than 100 millions pages on a standard PC with much u/d. This set of PHP and Perl scripts, called webtools4larbin, can handle the output of Larbin and p
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WebLoupe is a java-based tool for analysis, interactive visualization (sitemap), and exploration of the information architecture and specific properties of local or publicly accessible websites. Based on web spider (or web crawler) technology.
Nomad is tiny but efficient search engine and web crawler. This works very good for searching with in the set of corporate websites on internet and/or intranet's HTML documents or knowledge repositories.
Web Textual eXtraction Tools C++ Parallel web crawler, noun phrase idenification, Multi-lingual Part of Speech Tagging, Tarjan's Algorithm, Co-RelationShip Mappings...
Larbin is an HTTP Web crawler with an easy interface that runs under Linux. It can fetch more than 5 million pages a day on a standard PC (with a good network).
A Java implementation of a flexible and extensible web spider engine.
Optional modules allow functionality to be added (searching dead links, testing the performance and scalability of a site, creating a sitemap, etc ..
Arachnid is a Java-based web spider framework. It includes a simple HTML parser object that parses an input stream containing HTML content. Simple Web spiders can be created by sub-classing Arachnid and adding a few lines of code called after each page
WebSPHINX is a web crawler (robot, spider) Java class library, originally developed by Robert Miller of Carnegie Mellon University. Multithreaded, tollerant HTML parsing, URL filtering and page classification, pattern matching, mirroring, and more.
Harvest is a web indexing package, originally disigned for distributed indexing,
it can form a powerful system for indexing both large and small web sites.
Also now includes Harvest-NG a highly efficient, modular, perl-based web
crawler.
Spider is web crawler written in the Java.Based on an Regular expression string the spider parses the internet for web pages matching this string and stores it in an MYSQL database.
studiMaps is a web based application for visualization and analysis of social networks. It consists of two software components: a web-crawler for getting data and the web based application for visualization.