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Full-Text Search Engines

Systems for fast, accurate searching of text-based content.

34 projects

55,806 contributors

$1.3B

Elasticsearch

Elasticsearch is a distributed, RESTful search and analytics engine capable of addressing a growing number of use cases. As the heart of the Elastic Stack, it centrally stores data for lightning fast search, fine‑tuned relevancy, and powerful analytics.

Contributors

18,290

Organizations

3,604

Software value

$193M

OpenSearch

The purpose of the OpenSearch Software Foundation is to raise, budget and spend funds in support of various open source, open data and/or open standards projects relating to open source search and analysis solutions.

Contributors

14,731

Organizations

1,899

Software value

$577M

ripgrep

ripgrep recursively searches directories for a regex pattern while respecting your gitignore

Contributors

2,978

Organizations

997

Software value

$1.7M

PnP Modern Search Solution

Home of PnP Modern Search solutions, helping you move from classic to modern SharePoint and beyond

Contributors

1,965

Organizations

44

Software value

$1.3M

Meilisearch

Meilisearch is an open-source search engine that provides fast, relevant, and typo-tolerant full-text search capabilities. It is designed to be easy to integrate into applications and offers features like instant search results, custom ranking rules, and faceted search.

Contributors

1,675

Organizations

470

Software value

$7.1M

Typesense

Typesense is an open source search engine that provides fast, typo-tolerant search functionality with instant search experiences and auto-complete suggestions. It is designed to be easy to use, run, and scale, offering features like faceted search, geo search, and numerical search with millisecond response times.

Contributors

1,667

Organizations

408

Software value

$7.2M

ElasticSuite

Smile ElasticSuite - Magento 2 merchandising and search engine built on ElasticSearch

Contributors

1,586

Organizations

154

Software value

$2.9M

Searchkick

Intelligent search made easy

Contributors

1,438

Organizations

423

Software value

$353K

Apache Lucene

Apache Lucene is a high-performance, full-featured text search engine library written in Java. It provides indexing and search technology, as well as spellchecking, hit highlighting and advanced analysis/tokenization capabilities.

Contributors

1,264

Organizations

173

Software value

$40M

Fuse.js

Fuse.js is a lightweight fuzzy-search library that enables powerful searching with approximate string matching and ranking in JavaScript. It allows developers to search through lists and find items even when there are spelling mistakes or partial matches.

Contributors

1,168

Organizations

391

Software value

$301K

RavenDB

RavenDB is a NoSQL document database that provides a flexible, schema-free data model with ACID transaction support, automatic indexing, and full-text search capabilities. It offers high availability through distributed clustering, multi-document transactions, and built-in data replication features.

Contributors

1,131

Organizations

153

Software value

$129M

RediSearch

A query and indexing engine for Redis, providing secondary indexing, full-text search, vector similarity search and aggregations.

Contributors

1,108

Organizations

195

Software value

$12M

Apache Solr

Apache Solr is an open-source enterprise search platform built on Apache Lucene. It provides distributed indexing, replication, load-balanced querying, automated failover and recovery, centralized configuration, and full-text search capabilities. Solr powers the search and navigation features of many large-scale internet sites.

Contributors

988

Organizations

134

Software value

$57M

Apache Solr for TYPO3 CMS

A TYPO3 extension that integrates the Apache Solr search server with TYPO3 CMS. dkd Internet Service GmbH is developing the extension. Community contributions are welcome. See CONTRIBUTING.md for details.

Contributors

881

Organizations

100

Software value

$4.3M

Manticore Search

Easy to use open source fast database for search | Good alternative to Elasticsearch now | Drop-in replacement for E in the ELK soon

Contributors

877

Organizations

115

Software value

$23M

Openverse

Openverse is a search engine and API for openly-licensed media, including images, audio, and other creative content. It enables users to discover and reuse free-to-use content from various sources across the internet while respecting attribution and licensing requirements.

Contributors

770

Organizations

88

Software value

$17M

Vespa

Vespa is an open source big data serving engine that enables storing, searching, ranking and organizing structured content at large scale. It provides real-time processing, advanced search capabilities, and machine learning-powered ranking for applications requiring low latency access to large datasets.

Contributors

767

Organizations

116

Software value

$71M

CourtListener

A fully-searchable and accessible archive of court data including growing repositories of opinions, oral arguments, judges, judicial financial records, and federal filings.

Contributors

505

Organizations

80

Software value

$19M

VuFind

VuFind is an open-source library resource portal and discovery layer that allows users to search and browse through a library's collection of books, journals, and other materials. It provides faceted searching, record viewing, and integration with various library systems.

Contributors

460

Organizations

65

Software value

$19M

Aleph

Search and browse documents and data; find the people and companies you look for.

Contributors

352

Organizations

80

Software value

$4M

ugrep

🔍 ugrep 7.2 file pattern searcher -- a more powerful, ultra fast, user-friendly, compatible grep replacement. Includes a TUI, Google-like Boolean search with AND/OR/NOT, fuzzy search, hexdumps, searches (nested) archives (zip, 7z, tar, pax, cpio), compressed files (gz, Z, bz2, lzma, xz, lz4, zstd, brotli), pdfs, docs, and more

Contributors

299

Organizations

82

Software value

$3.8M

Groonga

Groonga is a high-performance, open-source full-text search engine and column store database. It features fast full-text search capabilities, supports multiple languages and encodings, and can be embedded into other applications or used as a standalone database server.

Contributors

198

Organizations

63

Software value

$32M

Hibernate Search

Hibernate Search: full-text search for domain model

Contributors

195

Organizations

40

Software value

$18M

Datashare

A self-hosted search engine for documents.

Contributors

159

Organizations

40

Software value

$1.5M

NNTmux

NNTmux is a Usenet indexing application forked from Newznab, designed to help users search, browse and manage Usenet content. It provides features for indexing newsgroups, managing NZB files, and integrating with various Usenet services.

Contributors

144

Organizations

16

Software value

$4.8M

FTS Xapian

Dovecot FTS plugin based on Xapian

Contributors

142

Organizations

30

Software value

$103K

Stroom

Stroom is a highly scalable data storage, processing and analysis platform.

Contributors

68

Organizations

8

Software value

$50M

Anserini

Anserini is a Lucene toolkit for reproducible information retrieval research

This project hasn't been onboarded to LFX Insights.

Apache Lucene and Solr

Apache Lucene and Solr open-source search software

This project hasn't been onboarded to LFX Insights.

Mroonga

A MySQL pluggable storage engine based on Groonga

This project hasn't been onboarded to LFX Insights.

OpenGrok

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

This project hasn't been onboarded to LFX Insights.

Sourcegraph

Code AI platform with Code Search & Cody

This project hasn't been onboarded to LFX Insights.

Uwazi

Uwazi is a web-based, open-source solution for building and sharing document collections

This project hasn't been onboarded to LFX Insights.
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