Apache Lucene offers open-source search software and libraries for building custom search engines and advanced information retrieval solutions.
Build custom search engines with open-source tools
Apache Lucene is an open-source project focused on providing powerful search software for developers. At its core, Lucene offers a robust library that lets you create your own search engines or add advanced search features to your applications. It also includes PyLucene, a Python binding, so you can work with Lucene technology in different programming environments.
Whether you're building a website, app, or handling large volumes of text data, Lucene gives you the tools to index, search, and retrieve information quickly and efficiently. The project is part of the Apache Software Foundation, and it's widely used by organizations that need reliable, customizable search capabilities without licensing fees.
If you want to add search functionality to your own projects or just learn how information retrieval works under the hood, Apache Lucene is a flexible and well-supported place to start.
Discover websites similar to Lucene.apache.org based on shared categories, topics, and features.
Typesense is an open-source, typo-tolerant search engine that helps you add fast, instant search experiences to your apps or websites with ease.
Apache Solr is an open source search platform for building fast, scalable search and analytics features into websites and apps.
Find and explore Creative Commons-licensed images, audio, and more for reuse and sharing through a simple, open search portal for global creativity.
Apache Nutch is an open-source web crawler that lets you collect, index, and manage web data at scale with customizable options for different needs.
Ecosia is a search engine that uses its profits to fund tree planting projects worldwide, making your online searches help the planet.
Xapian is an open-source search engine library for developers, offering C++ core and bindings for many languages to add powerful search features.
Look up domain registration info and internet number details with ICANN Lookup. Quickly access public records for any website or IP address.
Find NixOS packages, options, and documentation quickly with this search tool for users and developers of the NixOS Linux distribution.
Typesense Cloud offers fast, hosted search for apps and websites, making it easy to add powerful, typo-tolerant search features without server setup.
French search engine that protects your privacy and lets you support social and environmental projects just by searching online.
Search patents and scholarly works worldwide for free with The Lens. Access open, secure, and privacy-focused science and technology knowledge.
Explore concepts and words in 500 languages with BabelNet, a multilingual encyclopedic dictionary and semantic network connecting millions of terms.
GreatFire.org uses AI to monitor, analyze, and help bypass internet censorship, supporting free speech and access to information worldwide.
Enter a DOI to quickly find and access the latest version of academic articles, papers, and research objects using this simple DOI resolver tool.
Nominatim is an open-source tool that lets you search for locations and addresses worldwide using OpenStreetMap data, including reverse geocoding.
Search for places and addresses worldwide using OpenStreetMap data. Get location details, coordinates, and maps quickly and easily.
Browse and search through Chromium's open-source codebase with powerful tools for exploring, understanding, and learning from real project code.
Search and discover Java libraries and components in the official Maven Central Repository for easy integration into your projects.
Explore and access global earth observation data, maps, and geospatial resources for research, analysis, and decision-making in one place.
Explore and search Perl modules, distributions, and documentation easily on MetaCPAN—a central resource for Perl developers and open source contributors.
Baidu is a leading Chinese search engine that helps you quickly find information, websites, videos, and more in Chinese across the web.
Brave Search lets you find information online with privacy in mind, offering unbiased results and AI-powered answers without tracking your activity.
Yandex offers fast web search in Russian, helping you find websites, images, music, and products using text, voice, or image queries.
Google is a search engine that helps you quickly find websites, images, news, and more online, all from one easy-to-use homepage.
Sogou is a Chinese search engine offering web, WeChat, news, and multimedia search, with smart AI features for fast, accurate, and easy results.
Swiftype lets you add powerful, customizable search to your website or app, making it easy for visitors to find exactly what they need.
Presearch is a privacy-focused search engine that lets you search the web and earn rewards, with features like AI-powered results and customizable tools.
YaCy lets you run your own decentralized search engine, joining a global network to search the web privately and without central control.
Meilisearch is an open-source AI search engine that delivers fast, relevant full-text search with features like semantic and facet search.
Manticore Search is a fast, open-source database engine for full-text and vector search, offering easy integration and high performance for big data projects.
Search and discover images from across the web quickly and easily using Google Images, the go-to tool for finding photos, graphics, and more.
Find answers and explore the web with Microsoft Bing—search for websites, images, videos, maps, news, and more, all powered by AI technology.
DuckDuckGo is a privacy-focused search engine that helps you find what you need online without tracking your searches or personal information.
Search the official US trademark database to check if a trademark is available or already registered for specific goods or services in the United States.
Search for and analyze internet-connected devices worldwide, helping users discover vulnerabilities, monitor networks, and improve cybersecurity.
Cliqz was an independent search engine focused on privacy and unbiased results, but is no longer in operation. Former users can find closure here.
Find and download datasheets for millions of electronic components from thousands of manufacturers with this easy-to-use search engine.
Browse and compare public SearXNG search engine instances, with up-to-date status and key info to help you find the best option for private searching.
Search Encrypt is a privacy-focused search engine that keeps your searches private and secure, helping you browse the web without tracking your activity.
SearchWP upgrades your WordPress site search, making it faster and more accurate so visitors can easily find any content or product you offer.