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Sphider è un opensource web spider e motore di ricerca. Include un crawler automatizzato, che può seguire i links di un sito e indicizzarli. Scritto in PHP e usa MySQL.

Features

Spidering and indexing

• Performs full text indexing.
• Can index both static and dynamic pages.
• Finds links in href, frame, area and meta tags, and can also follow links given in javascript as strings via window.location and window.open.
• Respects robots.txt protocol, and nofollow and noindex tags.
• Follows server side redirections.
• Allows spidering to be limited by depth (ie maximum number of clicks from the starting page), by (sub)domain or by directory.
• Allows spidering only the urls matching (or not matching) certain keywords or regular expressions.
• Supports indexing of pdf and doc files (using external binaries for file conversion).
• Allows resuming paused spidering.
• Possbility to exclude common words from being indexed.

Searching

• Supports AND, OR and phrase searches
• Supports excluding words (by putting a ‘-‘ in front of a word, any page including the word will be omitted from the results).
• Option to add and group sites into categories
• Possibility to limit searching to a given category and its subcategories.
• Possibility of searcing in a specified domain only.
• “Did you mean” search suggestion on mistyped queries.
• Context-sensitive auto-completion on search terms (a la Google Suggest)
• Word stemming for english (searching for “run” finds “running”, “runs” etc)

Administering

• Includes a sophisticated web based administration interface
• Supports indexing via a web interface as well as from commandline – easy to set up cron jobs.
• Comprehensive site and search statistics
• Simple template system – easy to integrate into a site

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