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Fess

fess.codelibs.org

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Spec score 8.3 #6 of 26 in AI Enterprise Search Software

Spec sheet

Product
Fess is an open-source enterprise search server for searching websites, files, and databases.Read 30 Sep 2026 · fess.codelibs.org
Deployment
Fess runs on operating systems with a Java or Docker runtime environment.Read 30 Sep 2026 · fess.codelibs.org
API
Fess documentation covers an API, and external system integration can use access tokens.Read 30 Sep 2026 · fess.codelibs.org
Integrations
Fess can return search results in JSON, integrate with websites using JavaScript, and extend functionality through plugins.Read 30 Sep 2026 · fess.codelibs.org
Support
The open-source edition is community-supported and has no guaranteed support; paid professional support is available by email.Read 30 Sep 2026 · fess.codelibs.org
License
Fess is provided under the Apache License and is free for personal and commercial use.Read 30 Sep 2026 · fess.codelibs.org
Maker
CodeLibs, Inc. is located in Yokohama City, Kanagawa, Japan, and was established in November 2019.Read 30 Sep 2026 · codelibs.co
Authentication
Secure search supports BASIC, DIGEST, NTLM, and FORM authentication, plus single sign-on using Active Directory, SAML, and other methods.Read 30 Sep 2026 · fess.codelibs.org
Built-in tools
Fess includes a crawler, indexer, administration console, and search interface.Read 30 Sep 2026 · fess.codelibs.org
Content sources
The crawler supports web pages, file systems, Windows shared folders, and databases.Read 30 Sep 2026 · fess.codelibs.org
File formats
The crawler supports formats including Microsoft Office documents and PDF, and can use external text extraction such as OCR.Read 30 Sep 2026 · fess.codelibs.org
Latest release
The downloads page lists Fess 15.8.0 with Java 21 and OpenSearch 3.8.0 as the latest stable release.Read 30 Sep 2026 · fess.codelibs.org
Search engine
Fess is built on OpenSearch.Read 30 Sep 2026 · fess.codelibs.org
Search features
Search includes facets, drill-down, autocomplete, suggestions, cached results, and thumbnails.Read 30 Sep 2026 · fess.codelibs.org
Support response
Professional support lists first-response targets of three business days for Silver, two for Gold, and one for Platinum.Read 30 Sep 2026 · n2sm.net

Plans and prices

Fess Open Source Free Apache License · personal and commercial use · community-supported · no guaranteed support Read 30 Sep 2026 · fess.codelibs.org
Professional Support Priced on request Silver: 5 incidents/3 months · Gold: 10 incidents/3 months · Platinum: unlimited · per site · email support Read 30 Sep 2026 · n2sm.net

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