Open Source Java Search Engines

Elasticsearch is a distributed, RESTful search and analytics engine that lets you store, search and analyze with ease at scale. It lets you perform and combine many types of searches; it scales seamlessly, and offers answers incredibly fast with search results you can rank based on a variety of factors. Elasticsearch can be used for a wide variety of use cases, from maps and metrics to site search and workplace search, and with all data types.

TouchGraph provides a set of interfaces for graph visualization using force-based layout and focus+context techniques. For now only older code is available, but we are planning to release new versions as well.

ResCarta Toolkit offers an open source solution to creating, storing, viewing, and searching digital collections. Applications in the toolkit let users create and edit metadata, convert data to open standard ResCarta format, index and host collections.

OpenSearchServer is a powerful, enterprise-class, search engine program. Using the web user interface, the crawlers (web, file, database, etc.) and the client libraries (REST/API , Ruby, Rails, Node.js, PHP, Perl) you will be able to integrate quickly and easily advanced full-text search capabilities in your application: Full-text with basic semantic, join queries, boolean queries, facet and filter, document (PDF, Office, etc.) indexation, web scrapping,etc. OpenSearchServer runs on Windows and Linux/Unix/BSD.

Framework for text mining, data integration and data analysis. Keywords: ontology and graph alignment, relation mining, warehouse, semantic database integration, bioinformatics, systems biology, microarray, Java.

O3-XDS stands for "Open Three (O3) - Cross Enterprise Document Sharing". O3-XDS is an Open Source and IHE compliant XDS Registry and Repository.

Booletin es un buscador de Boletines oficiales (BOE, BOCM, etc.), que incluye un sistema de alertas por correo electrónico. Utiliza Apache Lucene para indexar el contenido en pdf de los boletines oficiales de España.

Common Library is a learning content and document management system that enables dynamic outcome-based learning object alignment through semantic analysis & granular addressability. For implementation questions contact http://www.bluefletch.com.

Contineo is a Web-based Document Management System (DMS). Features: Folder organization, document Versioning, Bulk import, import from mailbox. NOTE: this project has been DISMISSED in favor of LogicalDOC http://sourceforge.net/projects/logicaldoc

With DoCASU, Alfresco users have a simplified and easy to use solution to access, search and manage documents. DoCASU is a Rich Internet Application (RIA) based on Alfresco Web Scripts and ExtJS. Find all details on: http://code.optaros.com/trac/docasu

DocInfoRetriever is a Web_based document full-text search engine based on lucene. It allows you to search the contents and metadata of documents . Supported document formats, likes doc, xls, pdf, odt, jpg...etc.,and torrent files.

Prototype for a framework and user interface for combining various structured search and document clustering techniques.

Fire.now is a Firefox plugin that automatically adds your documents to the WhereIsNow latest version discovery service. Everytime you upload a document somewhere, Fire.now integrates the WhereIsNow keys into the file and add it's url to WhereIsNow.

Gumshoe Desktop Search indexes local files of various formats on a Windows desktop and provides a search GUI. The project is developed in Java. It builds on other opensource projects including Lucene, Luke, SWT, tagsoup, Jakarta POI and others.

A SOAP-based Document/File-Sharing solution written in Java. It includes a basic web-interface but other clients are possible. You can share and download all common office document formats like MS Word, Excel, OpenOffice and PDF.

A Java library which allows to parse the latest freely available RDF files available at DMOZ (Open Directory Project) and inserts them into any JDBC compliant relational database (i.e. MySQL, PostgreSQL and others to come like Oracle, MS Access, SQLite).

MERRYts is the Most Efficient Reader for Representing Your Terminology System. One GUI for all (medical) Terminology Systems

OpenEphyra is an open framework for question answering (QA). It retrieves answers to natural language questions from the Web and other sources. Visit http://www.ephyra.info/ for more details and information on joining this open research initiative.

OpenOffice Search is a document indexer and search engine for OpenOffice documents. It is Java-based, so it will run on any J2SE enabled platform and uses an embedded Derby (Cloudscape) database.

Google(™) meets the Matrix. Red Piranha combines Lucene (Searching Ability), XML-RDF (ability to learn), Tomcat (for P2P Power) and Spring (Ease of use) to not only let you find anything, anywhere, but to actually understand what you are looking for.

SYRAH si propone di far emergere e rappresentare i concetti espressi per mezzo di un linguaggio naturale. SYRAH aims to discover and represent concepts expressed in natural languages. NLP, lemma, lemmario, italiano, rete, semantica, clustering, semantic

The TPAC Digital Library is a web-based application that publishes large catalogs of scientific data.

Analysis and interactive visualization of a web-based community. Supports different focuses on the given social network to present community groups to the user. Also specific information of each member is provided.

phpByteBazar is a web based, operating system independent file management and exchange application with multiple user support and comprehensive indexing and searching capabilities.