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fess
fess logo

fess

Active·★ 1.1k·Apache-2.0·Updated 2026-10-21
★ Essential★ Trending

Fess is an enterprise search server built on OpenSearch, designed for easy installation and management via a browser-based UI. It features robust crawlers for various data sources, full-text search capabilities, and supports numerous document formats and multilingual interfaces.

#Enterprise Search#Full-text Search#Web Crawler
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#Multilingual
$ Install
$ unzip fess-*.zip && cd fess-* && ./bin/fess
↗ Visit site★ GitHub
01

Features

01Full-text search with faceting, sorting, and search suggestions
02Crawlers for web sites, file systems, and data stores (databases, cloud storage, and SaaS)
03Browser-based administration UI and a REST API
04Role- and permission-based filtering of search results
05Multilingual user interface and text analysis (20+ languages)
02

Compatibility

Java
Runtime
Verified via docs
OpenSearch
Backend
Verified via docs
Docker
Deployment
Verified via docs
Debian/Ubuntu
OS
Verified via docs
RHEL/CentOS
OS
Verified via docs
03

Quick start

1
$ unzip fess-*.zip
2
$ cd fess-*
3
$ ./bin/fess
04

Use cases

↳Implement an internal enterprise search engine for documents, files, and databases
↳Provide a free alternative to Google Site Search for embedding on websites
↳Index and search content from various data stores like Confluence, Jira, S3, and Salesforce
↳Deliver secure search with role- and permission-based access control
05

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codelibs /
fess
↗

Open-source, self-hosted enterprise & site search server built on OpenSearch. Crawls web / file / DB / cloud sources, 20+ languages, REST API, and AI/RAG & semantic search. Apache-2.0.

1.1kApache-2.0
Last commit2d ago
StatusActive
CategoryRAG / Knowledge Base
Links
Documentation↗Discussion↗Issues↗Releases↗
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