Open Source Java Search Engines
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Java Search Engines
View 80 business solutionsBrowse free open source Java Search Engines and projects below. Use the toggles on the left to filter open source Java Search Engines by OS, license, language, programming language, and project status.
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Cloud data warehouse to power your data-driven innovationBigQuery Studio provides a single, unified interface for all data practitioners of various coding skills to simplify analytics workflows from data ingestion and preparation to data exploration and visualization to ML model creation and use. It also allows you to use simple SQL to access Vertex AI foundational models directly inside BigQuery for text processing tasks, such as sentiment analysis, entity extraction, and many more without having to deal with specialized models.
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Hibernate
An object relational-mapping (ORM) library for Java
Hibernate is an Object/Relational Mapper tool. It's very popular among Java applications and implements the Java Persistence API. Hibernate ORM enables developers to more easily write applications whose data outlives the application process. As an Object/Relational Mapping (ORM) framework, Hibernate is concerned with data persistence as it applies to relational databases (via JDBC). -
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Elasticsearch
A Distributed RESTful Search Engine
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. -
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Greenstone
Digital Library Software
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. -
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The Lemur Project
Search engine and data mining applications and ClueWeb datasets.
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. -
eProcurement SoftwareeBuyerAssist by Eyvo is a cloud-based procurement solution designed for businesses of all sizes and industries. Fully modular and scalable, it streamlines the entire procurement lifecycle—from requisition to fulfillment. The platform includes powerful tools for strategic sourcing, supplier management, warehouse operations, and contract oversight. Additional modules cover purchase orders, approval workflows, inventory and asset management, customer orders, budget control, cost accounting, invoice matching, vendor credit checks, and risk analysis. eBuyerAssist centralizes all procurement functions into a single, easy-to-use system—improving visibility, control, and efficiency across your organization. Whether you're aiming to reduce costs, enhance compliance, or align procurement with broader business goals, eBuyerAssist helps you get there faster, smarter, and with measurable results.
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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.
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ResCarta
Archive your personal history
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. -
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YaCy Peer-to-Peer Search Engine
Decentralized Web Search Engine
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. -
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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.
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OpenSearch
Open source distributed and RESTful search engine
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. -
Desktop and Mobile Device Management SoftwareDesktop Central is a unified endpoint management (UEM) solution that helps in managing servers, laptops, desktops, smartphones, and tablets from a central location.
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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.
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OpenSearchServer Search Engine
An open source search engine with RESTFul API and crawlers
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. -
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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.
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Web Spider, Web Crawler, Email Extractor
Free Extracts Emails, Phones and custom text from Web using JAVA Regex
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 -
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Web Spider, Web Crawler, Email Extractor
Free Extracts Emails, Phones and custom text from Web using JAVA Regex
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 -
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Geoportal Server is a standards-based, open source product that enables discovery and use of geospatial resources including data and services.
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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.
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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.
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ftserver-android
Self-hosted search engine with web service to share discoveries with
Full Text Search Engine for Android Mobile, Windows Desktop, Linux Server. You can use the KeyWord to find relative WebSites, dig in important information, search answers. It has a web server inside, use it to share discoveries with people. App's Source Codes included, can be freely distributed over the internet in an unchanged or changed form. Check the file size after downloaded the Android APK. https://sourceforge.net/projects/ftserver-android/files/ The Code Repository includes FTServer Android Version Source Code (Android) FTServer Java Server Version Source Code (Linux Windows) FTServer .NET Server Version Source Code (Linux Windows) https://sourceforge.net/p/ftserver-android/code/ -
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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.
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A Java implementation of a flexible and extensible web spider engine. Optional modules allow functionality to be added (searching dead links, testing the performance and scalability of a site, creating a sitemap, etc ..
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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
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Classifier4J is a java library that provides an API for automatic classification of text. The default (and only current) implementation of this API is a Bayesian classifier. This library can be used for multiple purposes - as a spam filter or a blog cl
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Smart Cache Loader
Very configurable web downloader
Smart Cache Loader is a very configurable pure Java web grabber with special support for integration with Smart Cache proxy server. It can perform different loading operations based on URL mask, content-type, ... -
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Project consist of 2 parts. One of them is a J2ME app. used to get information such as photo, position, speed & course from GPS and transfers it to the web server. Another one is a web app. which allows to manage and display received data using GoogleMap
