Lucene

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Categories: Miscellaneous

Author: The Apache Software Foundation

Latest version: 2.9.0
Added 2005-01-17Updated 2009-10-05

Open source text search engine library written entirely in Java.
The Lucene API offers both indexing and searching features.

Features include:
- Indexes text and HTML, document classes available for XML, PDF and RTF
- Search supports phrase and boolean queries, plus, minus and quote marks, and parentheses
- Allows single and multiple character wildcards anywhere in the search words, fuzzy search, proximity
- Will search for punctuation such as + or ?
- Field searches for title, author, etc., and date-range searching
- Supports most European languages
- Option to store and display full text of indexed documents
- Search results in relevance order (ranking)
- APIs for file format conversion, languages and user interfaces
- Incremental indexing and batch indexing
- Multiple-index searching with merged results

Built for Java

Library

Free or free version available

Source code provided

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