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.

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.

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.

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.

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.

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.

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.

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.

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

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.

SeerSuite is an application toolkit for digital libraries and search engines; i.e., CiteSeerX. CiteSeerX has moved to GitHub, please get the latest code from: https://github.com/SeerLabs/CiteSeerX

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.

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.

In Files there is WebCrawlerMySQL.jar which supports MySql Connection Free Web Spider & Crawler. Extracts Information from Web by parsing millions of pages. Store data into Derby Database and data are not being lost after force closing the spider. - Free Web Spider , Parser, Extractor, Crawler - Extraction of Emails , Phones and Custom Text from Web - Export to Excel File - Data Saved into Derby and MySQL Database - Written in Java Cross Platform Also See Free email Sender : https://sourceforge.net/projects/gitst-free-email-ender/ Please install Microsoft OpenJDK to start the application https://www.microsoft.com/openjdk

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

Users can now search Imgur for any phrase and ImgurDL/Loadur will automatically search for matching images. ImgurDL/Loadur will download the images while displaying the progress to the user.

Command line application written in Java useful for automation of downloading process and filtering contents of downloaded files. jDownloader uses simple script file to configure downloading and filtering processes.

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.

Switchboard is a conceptual-level interface to many web and network related functions (SOAP, REST, XML parsing, screen-scraping, FTP, network sniffing), designed for the Processing environment.

Simple Porn Downloader is a tiny all Java based application that uses a list of keywords and starting urls to crawl webpages and branch out searching for specific media extensions which are downloaded and presented in an html page.

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.

A fat client price checking tool. Similar in spirit to pricerunner and others except it checks prices at the source on demand. Supposed to save entering the same search criteria on multiple sites and then tabbing through to do a comparison.

In Files there is WebCrawlerMySQL.jar which supports MySql Connection Please follow this link to get latest version https://sourceforge.net/projects/web-spider-web-crawler-extract/ Free Web Spider & Crawler. Extracts Information from Web by parsing millions of pages. Store data into Derby OR MySQL Database and data are not being lost after force closing the spider. - Free Web Spider , Parser, Extractor, Crawler - Extraction of Emails , Phones and Custom Text from Web - Export to Excel File - Data Saved into Derby Database - Written in Java Cross Platform See also Free Email Sender in this link: https://sourceforge.net/projects/gitst-free-email-ender/ Please install Microsoft OpenJDK to start the application https://www.microsoft.com/openjdk

XQEngine is a Java component for searching collections of XML documents that uses an XQuery front end. The engine has a straightforward API that allows it to be easily embedded in end user applications. Requires some basic Java programming skills.

The project Navigator aims at supporting automated gathering of dynamic information from third party web sites, using their web interface to post queries and to gather replies. Navigator is written in OS-independent java language.