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.
- java
- elasticsearch
- full-text-search
- lucene
- crawler
- enterprise-search
- search-engine
- search
- ai-search
- docker
- elasticsearch-alternative
- llm
- mcp
- opensearch
- rag
- Stars
- 1,139
- Forks
- 175
- + today
- +1
- Created
- 13y
Ranking data as of October 5, 2026 (UTC).
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Overview
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. It ranks #1311 on GitTiger, gaining +1 star on October 5, 2026 (UTC).
The project is written in Java and has 175 forks. It was created 13y ago.
Installation
git clone https://github.com/codelibs/fess.git
cd fess
# see README for setup