DataparkSearch Engine is an open source search engine written in C. It is distributed under the GNU General Public License and designed to organize search within a website, group of websites, intranet or local system.

Key features

Support for http, https, ftp, nntp and news URL schemes.

htdb virtual URL scheme for indexing SQL databases.

Built-in support for text/html, text/xml, text/plain, audio/mpeg (MP3) and image/gif MIME types.

Support for external parsers for other datatypes.

Ability to index multilingual websites using content negotiation.

Searching all of the word forms using ispell affixes and dictionaries.

Fuzzy searching based on acronyms and abbreviations.

Stop-words, synonyms and acronyms lists.

Boolean query language support.

A subset of The Verity Query Language (VQL) is supported.

The Neo Popularity Rank based on neural network model.

Results sorting by relevance, popularity rank, last modified time and by importance (a multiplication of relevance and popularity rank).

Support and automatic detection for wide range of character sets and languages.

Accent insensitive search.

Phrase segmenting for Chinese, Japanese, Korean and Thai languages.

mod_dpsearch - search module for Apache web server.

Support for Internationalized Domain Names.

The Summary Extraction Algorithm.