Open Source Java Search Engines

The Hibernate projects offer a suite of powerful Java libraries to work with data. It is best known for Hibernate ORM, which provides relational persistence for Java models and is an implementation of the Jakarta Persistence specification. Hibernate projects do not consistently release binaries or documentation to SourceForge anymore. For up-to-date information, refer to the Hibernate website: * Hibernate ORM: https://hibernate.org/orm/ * Hibernate Validator: https://hibernate.org/validator/ * Hibernate Search: https://hibernate.org/search/ That website will also be updated with newer projects, such as Hibernate Reactive.

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.

Greenstone is a complete digital library creation, management and distribution package created and distributed by the New Zealand Digital Library Project. There are two major versions of the software. Greenstone 3 is under active development, and is recommended for download. We also provide maintenance releases for its forerunner, Greenstone 2. Featured download not what you're looking for? Click "Browse all files" to access binaries and source releases of both versions.

The Lemur Project develops search engines, browser toolbars, text analysis tools, and data resources that support research and development of information retrieval and text mining software, including the Indri search engine in C++, the Galago search engine research framework in Java, the RankLib learning to rank library, ClueWeb09 and ClueWeb12 datasets and the Sifaka data mining application.

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.

Geoportal Server is a standards-based, open source product that enables discovery and use of geospatial resources including data and services.

Regain is a Java search engine based on Jakarta Lucene. It provides indexing and searching files for plenty of formats (HTML,XML,doc(x),xls(x),ppt(x),oo,PDF,RTF,mp3,mp4,Java). A TagLibrary eases integrating search results in your JSP based web page.

NekoHTML is a simple HTML scanner and tag balancer that enables application programmers to parse HTML documents and access the information using standard XML interfaces.

OpenSearch is a distributed search and analytics engine based on Apache Lucene. After adding your data to OpenSearch, you can perform full-text searches on it with all of the features you might expect: search by field, search multiple indices, boost fields, rank results by score, sort results by field, and aggregate results. Unsurprisingly, people often use search engines like OpenSearch as the backend for a search application, think Wikipedia or an online store. It offers excellent performance and can scale up and down as the needs of the application grow or shrink. Its distributed design means that you interact with OpenSearch clusters. Each cluster is a collection of one or more nodes, servers that store your data and process search requests. You can run OpenSearch locally on a laptop, its system requirements are minimal, but you can also scale a single cluster to hundreds of powerful machines in a data center.

Online news and newspaper harvester - Like RSS Newsreader w/ database. National & International News. Very detailed catches hard to find news articles. Allows resposting of summaries w/ comments to Usenet Newsgroups, complex searches & more.

PDFBox is a Java PDF Library. This project will allow access to all of the components in a PDF document. More PDF manipulation features will be added as the project matures. This ships with a utility to take a PDF document and output a text file.

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.

Aperture is a Java framework for extracting and querying full-text content and metadata from various information systems (file systems, web sites, mail boxes, ...) and the file formats (documents, images, ...) occurring in these systems.

VDC has been superseded by DVN: https://sourceforge.net/projects/dvn/ ---- The Virtual Data Center project is building an operational, open-source, digital library to enable the sharing of quantitative research data, and the development of distribute

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

A torrent search engine plugin for the Azureus/Vuze bittorrent platform.

Infinispan is an open source, Java based data grid platform. ***IMPORTANT*** Starting with Infinispan 5.0.0.FINAL, Infinispan releases are no longer hosted in Sourceforge. They can now be located in www.jboss.org/infinispan/downloads

This is an ***old archive*** of tools developed for facilitating the use of Creative Commons licenses and metadata. --- For the most up to date representation of any of the projects listed here, please see: http://creativecommons.org/project/Developer.

Web data extraction (web data mining, web scraping) tool. It leverages well proved XML and text processing techologies in order to easely extract useful data from arbitrary web pages.

webExtractor is a Java application that is used for extracting specific content from web based HTML, XML, CSV, and free form text. The extracted data can be used for data gathering and mining purposes.

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.

DBPrism is a framework to generate dynamic XML from a database, it provides an high performance DBGenerator for Cocoon2. Also is a J2EE replacement for Oracle mod_plsql. This project also includes a Restlet-Oracle connector exam. and Lucene Domain In

Hyper Estraier is a full-text search system. It works as with Google, but based on peer-to-peer architecture. Using Hyper Estraier, we can construct a large-scaled search engine with cheap computers.

Oxyus is an open source search engine written in 100% Java, aimed to provide a search button to your website in an easy way. Oxyus uses Apache Lucene for indexing, Quartz for scheduling and other interesting software products.

This is the official collaborative development environment of the Large Knowledge Collider (LarKC), a platform for massive distributed reasoning that aims to remove the scalability barriers of currently existing reasoning systems for the Semantic Web