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.

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.

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.

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.

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.

The BeeGram library is a portable open source search engine toolkit written in C. BeeGram provides a number of building blocks for the construction of powerful general-purpose text-based search tools.

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.

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.

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.

YaCy is a free search engine that anyone can use to build search the internet (www and ftp) or to create a search portal for others (internet or intranet). The scale of YaCy is limited only by the number of users and can index billions of web pages. In p2p mode it is fully decentralized, all users of the search engine network are equal and it is not possible for anyone to censor the content of the distributed index.

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

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.

The "Netiquette abolishment project" ! Replace content RATING by content POSITIONNING. This project's main goal is to create an on line 'real place': It will work like a 3D visualisation software: you select your interests by geting close to them,

cpDetector is a proxy for codepage detection of documents. It delegates to multiple instances that try to detect the codepage by different techinques. A command line executeable is shipped that allows to sort documents by codepage.

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

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.

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

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.

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.

AIS - Associative Indexing Service, an application for storing bookmarks, memos, indexing of big (lifetime) archives for fast future access to the data by (personalized) keywords. In other words - it is an extension of human associative memory :)

WebSPHINX is a web crawler (robot, spider) Java class library, originally developed by Robert Miller of Carnegie Mellon University. Multithreaded, tollerant HTML parsing, URL filtering and page classification, pattern matching, mirroring, and more.

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

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.

A PHP library/framework for the development of websites. The main features are: database independence, template-driven content, theme-able content generation, integrated WML generation, user content management, Lucene server integration.

Utilities and C/C++-library API for mapping between IP-addresses and locations (ISO 3166 country codes and names).