Search engine library with many features including fast indexing, ranked searching, boolean, phrase, and span queries, date-range searching, and extension APIs. News, details of sub-projects, documentation, and downloads. [Open Source]

An open-source search server based on the Lucene Java search library. News, documentation, resources, and download.

Port of the Java Lucene search engine to the C# and .NET platform utilizing Microsoft .NET Framework. News, downloads and documentation.

Open-source web-search software, built on Lucene Java. Project news, documentation, and download.

An open-source project built on top of Lucene aiming at simplifying the integration of search into any Java application. Overview, download, documentation and support.

Review by Brian Goetz of Java World praising the open-source search engine.

Article by Steven J. Owens explaining how to use the Lucene API.