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Key features
- Support for http, https, ftp, nntp and news URL schemes.
- htdb virtual URL scheme support for indexing SQL databases.
- text/html, text/xml, text/plain, audio/mpeg (MP3) and image/gif MIME types built-in support.
- External parsers support for other document types.
- Ability to index multilangual sites using content negotiation.
- Searching all of the word forms using ispell affixes and dictionaries.
- Stopwords, synonyms and acronyms lists.
- Boolean query language support.
- Results sorting by relevance, popularity rank, last modified time and by importance (a multiplication of relevance and popularity rank).
- Various character sets support.
- Phrases segmenting for Chinese, Japanese, Korean and Thai languages.
- Accent insensitive search.
- mod_dpsearch - a search module for Apache web server (both 1.x and 2.x branches).
- Internationalized Domain Names support.
- The Summary Extraction Algorithm.
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