Java Open Source Projects Directory

...dedicated into Java open source projects

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Search Engines


Solr is an open source enterprise search server based on the Lucene Java search library, with XML/HTTP APIs, caching, replication, and a web administration interface.



The Compass Framework is a first class open source Java framework, enabling the power of Search Engine semantics to your application stack declaratively. Built on top of the amazing Lucene Search Engine, Compass integrates seamlessly to popular development frameworks like Hibernate and Spring. It provides search capability to your application data model and synchronises changes with the datasource. With Compass: write less code, find data quicker.



LIUS - Lucene Index Update and Search LIUS is an indexing Java framework based on the Jakarta Lucene project. The LIUS framework adds to Lucene many files format indexing fonctionalities as: Ms Word, Ms Excel, Ms PowerPoint, RTF, PDF, XML, HTML, TXT, Open Office suite and JavaBeans. LIUS is very easy to use; all the configuration of the indexing (types of files to be indexed, fields, etc...) as well as research is defined in a XML file, so the user only have to write few lines of code to carry out the indexing or research. LIUS has been developed from a range of Java technologies and full open source applications.



Nutch is a nascent effort to implement an open-source web search engine. Nutch provides a transparent alternative to commercial web search engines.



Egothor is an Open Source, high-performance, full-featured text search engine written entirely in Java. It is technology suitable for nearly any application that requires full-text search, especially cross-platform. It can be configured as a standalone engine, metasearcher, peer-to-peer HUB, and, moreover, it can be used as a library for an application that needs full-text search.



MG4J (Managing Gigabytes for Java) is a collaborative effort aimed at providing a free Java implementation of inverted-index compression techniques; as a by-product, it offers several general-purpose optimised classes, including fast and compact mutable strings, bit-level I/O, fast unsynchronised buffered streams, (possibly signed) minimal perfect hashing, etc. MG4J functions as a full-fledged text-indexing system. It can analyze, index, and query consistently large document collections.


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