Open Source Java Search Engines for Linux

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.

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.

This project provides full text search in Java. It is a Java port of the elasticlunr Javascript project (http://elasticlunr.com/). The documentation is available at https://jelasticlunr.sourceforge.io/.

NOTICE: This code repository is deprecated. Please visit https://github.com/cdlib/xtf for the latest updates. Obsolete Description: The eXtensible Text Framework (XTF) is an architecture that supports searching across collections of heterogeneous textual data (XML, PDF, HTML, text, and more), and the presentation of results and documents in a highly configurable manner. Includes highly customized versions of the proven open-source components Lucene and Saxon.

A drop-in framework for adding tagging (folksonomy) capabilities to existing applications

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.

Digital Learning Sciences (DLS) is a mission-centered, not-for-profit organization dedicated to improving learning through the use of digital content and tools.

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

A fusion of several open-source libraries and a web application to parse and filter RSS feeds, as well as generate RSS feeds based on user defined search terms

Glue 2 is a Semantic Web Service discovery engine fully compatible with the WSMO meta-model and the WSML language that aims at solving polarization problems by using mediators.

Infofuze is a Java library and server application that can be used to transform and combine data from various sources into a specific XML or other text output format that can be stored or indexed.

The Java-Sitemapper is a Java API for building sitemap files to improve search indexing on Google, Yahoo!, MSN, and Ask.com. This project strives to implement the latest in search technology for use on the Java platform.

JeCARS (Java Extendable Contents And Rights System) is a RESTful webservice which delivers pluggable output formats, e.g. Atom feeds or HTML. Third party applications can be plugged in. A JCR (JSR-170) repository (Jackrabbit) is used for storage.

JuniCoder is a Java project that uses unicode as a base for decoding and encoding formats that invented workarounds to express characters not covered by ASCII. Decoders translate those inventions to unicode. Encoders encode to these inventions.

OAI4J is a Java library that implements a client API for the OAI-PMH standard specification from the Open Archives Initiative. It also has support for the upcoming OAI-ORE specification.

Framework (scripts, configuration, code) to build free and public services around travel and leisure data. That project makes an extensive use of already existing data sources such as Geonames and dbPedia, and adds some glue around those (eg, links).

OpenMKS is a search & navigational tool for large multimedia collections. With pluggable functionality and a core subsystem supporting the z39.50 ZING Community SRW search & retrieval specification, it can be run either as a Servlet or as a Web Service.

OpenSearch editor is the editor of Firefox/IE7 search's plugins. For more information, please, visit http://opensed.sourceforge.net

The Retrieval Component Integrator Project (RECOIN) intends to provide an extensible framework of Java classes to build a meta-search and information retrieval (IR) system based on heterogenous IR components as part of a modular retrieval process. The so

Our aim is to enable Web applications to consume linked data from the Web. With SQUIN (Semantic Web Query Interface) we will provide a Web data query service as an addition to the LAMP technology stack. This service executes queries over the whole We

SSWAP (Simple Semantic Web Architecture and Protocol; pronounced "swap") is an architecture, protocol, and platform that uses reasoning to semantically integrate disparate data and services on the web. Running live at http://sswap.info.

This program is an editor for creating XBMC Scrapers. It is similar to ScraperEditor, an other editor using ScraperXML, that runs under .Net environment. This program runs under Sun/Oracle's Java Runtime. HELP WANTED! I am looking for someone, who would help me writing documentation, like user's manual and on-line help. Also if someone want to help, translated language files are always welcome...

TM4J is a topic map engine implemented entirely in Java. Topic maps are a standard paradigm for the interchange of knowledge structures. This project aims to produce a complete suite of tools for creating, processing and publishing topic map information.

TransOnto is a knowledge transformation and migration system for transferring knowledge between semantic representations. TransOnto includes the tron library and the SemPP POWDER processor.