Open Source Search Engines Software
Search Engines software provides systems for indexing, storing, and retrieving information from large datasets. These tools enable full-text and semantic queries to find specific documents, web pages, or vector embeddings across unstructured data. This type of software serves developers and privacy-conscious users who need to manage their own search infrastructure. Self-hosting these apps ensures that search queries and indexed content remain on private hardware. This approach prevents external services from tracking search history or accessing sensitive internal databases.
This page lists 19 open source tools in the Search Engines category. The most popular are Vane, SearXNG and Qdrant. Most use the Apache-2.0 or AGPL-3.0 license, and 18 offer an official Docker image.
Vane
A privacy-focused AI answering engine that combines web search with local or cloud based language models.
SearXNG
A privacy respecting metasearch engine that aggregates results from multiple search services and databases.
Qdrant
Store and search vector embeddings with integrated payload filtering for semantic search and recommendation systems.
ZincSearch
A lightweight search engine providing full text indexing with minimal resource requirements and a built-in UI.
OpenSearch
A community driven search and analytics suite for ingesting, searching, visualizing, and analyzing unstructured data at scale.
Quickwit
A search engine for observability that provides full text search and aggregations on cloud storage.
Orama
Combine full text and semantic search with a vector database for applications requiring hybrid search capabilities.
CKAN
A data management system for cataloging, storing, and accessing datasets through a web portal and API.
Nominatim
Search OpenStreetMap data by name and address for geocoding and reverse geocoding of geographic points.
bitmagnet
A self-hosted BitTorrent indexer and DHT crawler with content classification and a web interface.
YaCy
A decentralized peer-to-peer search engine that allows users to host their own search index.
Swirl Search
Federated search and RAG platform that queries multiple sources without moving or indexing data.
OpenTripPlanner
A multi-modal trip planner for scheduled public transportation combined with walking, bicycling, and mobility services.
Bichon
A self-hosted email archiving server that downloads IMAP accounts and provides full-text search capabilities.
Hister
A privacy-focused web search engine that provides automatic full-text indexing for visited websites and local files.
Apache Solr
A multi-modal search platform providing full-text, vector, and geospatial search capabilities built on Apache Lucene.
Websurfx
A privacy respecting meta search engine written in Rust that aggregates results from multiple upstream engines.
Fess
An enterprise search server that crawls websites, file systems, and data stores for full text indexing.
kiwix-serve
An HTTP daemon that serves ZIM files to provide offline access to compressed web content.
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