# Fess Documentation

> Fess is an open-source, self-hosted enterprise & site search server built on OpenSearch. It crawls web / file / DB / cloud sources, supports 20+ languages, a REST API, and AI/RAG & semantic search. Apache-2.0.

Full text of this documentation: [llms-full.txt](https://fess.codelibs.org/llms-full.txt)

## Installation
- [Fess Installation Guide](https://fess.codelibs.org/15.7/install/index.html)
- [Docker Installation (Detailed Guide)](https://fess.codelibs.org/15.7/install/install-docker.html)
- [Linux Installation (Detailed Procedure)](https://fess.codelibs.org/15.7/install/install-linux.html)
- [Windows Installation (Detailed Procedure)](https://fess.codelibs.org/15.7/install/install-windows.html)
- [Choosing an Installation Method](https://fess.codelibs.org/15.7/install/install.html)
- [Introduction](https://fess.codelibs.org/15.7/install/intro.html)
- [System Requirements](https://fess.codelibs.org/15.7/install/prerequisites.html)
- [Startup, Shutdown, and Initial Setup](https://fess.codelibs.org/15.7/install/run.html)
- [Security Configuration](https://fess.codelibs.org/15.7/install/security.html)
- [Troubleshooting](https://fess.codelibs.org/15.7/install/troubleshooting.html)
- [Uninstallation Procedure](https://fess.codelibs.org/15.7/install/uninstall.html)
- [Upgrade Procedure](https://fess.codelibs.org/15.7/install/upgrade.html)

## Administration
- [Access Token](https://fess.codelibs.org/15.7/admin/accesstoken-guide.html)
- [Backup](https://fess.codelibs.org/15.7/admin/backup-guide.html)
- [Bad Word](https://fess.codelibs.org/15.7/admin/badword-guide.html)
- [Document Boost](https://fess.codelibs.org/15.7/admin/boostdoc-guide.html)
- [Crawling Info](https://fess.codelibs.org/15.7/admin/crawlinginfo-guide.html)
- [Dashboard](https://fess.codelibs.org/15.7/admin/dashboard-guide.html)
- [Data Store Crawling](https://fess.codelibs.org/15.7/admin/dataconfig-guide.html)
- [Page Design](https://fess.codelibs.org/15.7/admin/design-guide.html)
- [Dictionary](https://fess.codelibs.org/15.7/admin/dict-guide.html)
- [Duplicate Host](https://fess.codelibs.org/15.7/admin/duplicatehost-guide.html)
- [Additional Word](https://fess.codelibs.org/15.7/admin/elevateword-guide.html)
- [Query Request](https://fess.codelibs.org/15.7/admin/esreq-guide.html)
- [Failure URL](https://fess.codelibs.org/15.7/admin/failureurl-guide.html)
- [File Authentication](https://fess.codelibs.org/15.7/admin/fileauth-guide.html)
- [File Crawling](https://fess.codelibs.org/15.7/admin/fileconfig-guide.html)
- [General Settings](https://fess.codelibs.org/15.7/admin/general-guide.html)
- [Group](https://fess.codelibs.org/15.7/admin/group-guide.html)
- [Fess Administrator Guide](https://fess.codelibs.org/15.7/admin/index.html)
- [Introduction](https://fess.codelibs.org/15.7/admin/intro.html)
- [Job Log](https://fess.codelibs.org/15.7/admin/joblog-guide.html)
- [Key Match](https://fess.codelibs.org/15.7/admin/keymatch-guide.html)
- [Kuromoji Dictionary](https://fess.codelibs.org/15.7/admin/kuromoji-guide.html)
- [Label](https://fess.codelibs.org/15.7/admin/labeltype-guide.html)
- [Log Files](https://fess.codelibs.org/15.7/admin/log-guide.html)
- [Maintenance](https://fess.codelibs.org/15.7/admin/maintenance-guide.html)
- [Mapping Dictionary](https://fess.codelibs.org/15.7/admin/mapping-guide.html)
- [Path Mapping](https://fess.codelibs.org/15.7/admin/pathmap-guide.html)
- [Plugin](https://fess.codelibs.org/15.7/admin/plugin-guide.html)
- [Protwords Dictionary](https://fess.codelibs.org/15.7/admin/protwords-guide.html)
- [Related Content](https://fess.codelibs.org/15.7/admin/relatedcontent-guide.html)
- [Related Query](https://fess.codelibs.org/15.7/admin/relatedquery-guide.html)
- [Request Header](https://fess.codelibs.org/15.7/admin/reqheader-guide.html)
- [Role](https://fess.codelibs.org/15.7/admin/role-guide.html)
- [Scheduler](https://fess.codelibs.org/15.7/admin/scheduler-guide.html)
- [Search](https://fess.codelibs.org/15.7/admin/searchlist-guide.html)
- [Search Log](https://fess.codelibs.org/15.7/admin/searchlog-guide.html)
- [Stemmer Override Dictionary](https://fess.codelibs.org/15.7/admin/stemmeroverride-guide.html)
- [Stopwords Dictionary](https://fess.codelibs.org/15.7/admin/stopwords-guide.html)
- [Storage](https://fess.codelibs.org/15.7/admin/storage-guide.html)
- [Suggest Word](https://fess.codelibs.org/15.7/admin/suggest-guide.html)
- [Synonym Dictionary](https://fess.codelibs.org/15.7/admin/synonym-guide.html)
- [System Info](https://fess.codelibs.org/15.7/admin/systeminfo-guide.html)
- [Theme](https://fess.codelibs.org/15.7/admin/theme-guide.html)
- [Upgrade](https://fess.codelibs.org/15.7/admin/upgrade-guide.html)
- [User](https://fess.codelibs.org/15.7/admin/user-guide.html)
- [Web Authentication](https://fess.codelibs.org/15.7/admin/webauth-guide.html)
- [Web Crawling](https://fess.codelibs.org/15.7/admin/webconfig-guide.html)
- [Configuration Wizard](https://fess.codelibs.org/15.7/admin/wizard-guide.html)

## Search
- [Fess User Guide](https://fess.codelibs.org/15.7/user/index.html)
- [Introduction](https://fess.codelibs.org/15.7/user/intro.html)
- [Hidden Search Conditions](https://fess.codelibs.org/15.7/user/search-additional.html)
- [AND Search](https://fess.codelibs.org/15.7/user/search-and.html)
- [Boost Search](https://fess.codelibs.org/15.7/user/search-boost.html)
- [Field-Specified Search](https://fess.codelibs.org/15.7/user/search-field.html)
- [Fuzzy Search](https://fess.codelibs.org/15.7/user/search-fuzzy.html)
- [Geolocation-Based Search](https://fess.codelibs.org/15.7/user/search-geo.html)
- [Label-Specified Search](https://fess.codelibs.org/15.7/user/search-label.html)
- [NOT Search](https://fess.codelibs.org/15.7/user/search-not.html)
- [OR Search](https://fess.codelibs.org/15.7/user/search-or.html)
- [Range-Specified Search](https://fess.codelibs.org/15.7/user/search-range.html)
- [Sort Search](https://fess.codelibs.org/15.7/user/search-sort.html)
- [Wildcard Search](https://fess.codelibs.org/15.7/user/search-wildcard.html)
- [Special Characters](https://fess.codelibs.org/15.7/user/special-char.html)

## API
- [AccessToken API](https://fess.codelibs.org/15.7/api/admin/api-admin-accesstoken.html)
- [Backup API](https://fess.codelibs.org/15.7/api/admin/api-admin-backup.html)
- [BadWord API](https://fess.codelibs.org/15.7/api/admin/api-admin-badword.html)
- [BoostDoc API](https://fess.codelibs.org/15.7/api/admin/api-admin-boostdoc.html)
- [CrawlingInfo API](https://fess.codelibs.org/15.7/api/admin/api-admin-crawlinginfo.html)
- [DataConfig API](https://fess.codelibs.org/15.7/api/admin/api-admin-dataconfig.html)
- [Dict API](https://fess.codelibs.org/15.7/api/admin/api-admin-dict.html)
- [Documents API](https://fess.codelibs.org/15.7/api/admin/api-admin-documents.html)
- [ElevateWord API](https://fess.codelibs.org/15.7/api/admin/api-admin-elevateword.html)
- [FailureUrl API](https://fess.codelibs.org/15.7/api/admin/api-admin-failureurl.html)
- [FileConfig API](https://fess.codelibs.org/15.7/api/admin/api-admin-fileconfig.html)
- [General API](https://fess.codelibs.org/15.7/api/admin/api-admin-general.html)
- [Group API](https://fess.codelibs.org/15.7/api/admin/api-admin-group.html)
- [JobLog API](https://fess.codelibs.org/15.7/api/admin/api-admin-joblog.html)
- [KeyMatch API](https://fess.codelibs.org/15.7/api/admin/api-admin-keymatch.html)
- [LabelType API](https://fess.codelibs.org/15.7/api/admin/api-admin-labeltype.html)
- [Log API](https://fess.codelibs.org/15.7/api/admin/api-admin-log.html)
- [Admin API Overview](https://fess.codelibs.org/15.7/api/admin/api-admin-overview.html)
- [Plugin API](https://fess.codelibs.org/15.7/api/admin/api-admin-plugin.html)
- [RelatedContent API](https://fess.codelibs.org/15.7/api/admin/api-admin-relatedcontent.html)
- [RelatedQuery API](https://fess.codelibs.org/15.7/api/admin/api-admin-relatedquery.html)
- [Role API](https://fess.codelibs.org/15.7/api/admin/api-admin-role.html)
- [Scheduler API](https://fess.codelibs.org/15.7/api/admin/api-admin-scheduler.html)
- [SearchList API](https://fess.codelibs.org/15.7/api/admin/api-admin-searchlist.html)
- [Stats API](https://fess.codelibs.org/15.7/api/admin/api-admin-stats.html)
- [Storage API](https://fess.codelibs.org/15.7/api/admin/api-admin-storage.html)
- [Suggest API](https://fess.codelibs.org/15.7/api/admin/api-admin-suggest.html)
- [SystemInfo API](https://fess.codelibs.org/15.7/api/admin/api-admin-systeminfo.html)
- [User API](https://fess.codelibs.org/15.7/api/admin/api-admin-user.html)
- [WebConfig API](https://fess.codelibs.org/15.7/api/admin/api-admin-webconfig.html)
- [Admin API Reference](https://fess.codelibs.org/15.7/api/admin/index.html)
- [Authentication / Session API](https://fess.codelibs.org/15.7/api/api-auth.html)
- [Cache API](https://fess.codelibs.org/15.7/api/api-cache.html)
- [Chat API](https://fess.codelibs.org/15.7/api/api-chat.html)
- [Click Log API](https://fess.codelibs.org/15.7/api/api-click.html)
- [Favorites API](https://fess.codelibs.org/15.7/api/api-favorite.html)
- [Google Search Appliance Compatible API](https://fess.codelibs.org/15.7/api/api-gsa.html)
- [Health API](https://fess.codelibs.org/15.7/api/api-health.html)
- [Label API](https://fess.codelibs.org/15.7/api/api-label.html)
- [API Overview](https://fess.codelibs.org/15.7/api/api-overview.html)
- [Popular Words API](https://fess.codelibs.org/15.7/api/api-popularword.html)
- [API Quick Start](https://fess.codelibs.org/15.7/api/api-quickstart.html)
- [Related Queries and Content API](https://fess.codelibs.org/15.7/api/api-related.html)
- [Suggest API](https://fess.codelibs.org/15.7/api/api-suggest.html)
- [UI Config API](https://fess.codelibs.org/15.7/api/api-uiconfig.html)
- [Fess API Guide](https://fess.codelibs.org/15.7/api/index.html)
- [Introduction](https://fess.codelibs.org/15.7/api/intro.html)

## Configuration
- [Analyzer Configuration](https://fess.codelibs.org/15.7/config/admin-analyzer.html)
- [Index Management](https://fess.codelibs.org/15.7/config/admin-index-backup.html)
- [Index Export Feature](https://fess.codelibs.org/15.7/config/admin-index-export.html)
- [Log Notification](https://fess.codelibs.org/15.7/config/admin-log-notification.html)
- [Log Configuration](https://fess.codelibs.org/15.7/config/admin-logging.html)
- [Search Log Visualization Configuration](https://fess.codelibs.org/15.7/config/admin-opensearch-dashboards.html)
- [Analyzer Configuration](https://fess.codelibs.org/15.7/config/analyzer.html)
- [Advanced Crawler Configuration](https://fess.codelibs.org/15.7/config/crawler-advanced.html)
- [Basic Crawler Configuration](https://fess.codelibs.org/15.7/config/crawler-basic.html)
- [Thumbnail Configuration](https://fess.codelibs.org/15.7/config/crawler-thumbnail.html)
- [Crawler](https://fess.codelibs.org/15.7/config/crawler.html)
- [Atlassian Connector](https://fess.codelibs.org/15.7/config/datastore/ds-atlassian.html)
- [Box Connector](https://fess.codelibs.org/15.7/config/datastore/ds-box.html)
- [CSV Connector](https://fess.codelibs.org/15.7/config/datastore/ds-csv.html)
- [Database Connector](https://fess.codelibs.org/15.7/config/datastore/ds-database.html)
- [Dropbox Connector](https://fess.codelibs.org/15.7/config/datastore/ds-dropbox.html)
- [Git Connector](https://fess.codelibs.org/15.7/config/datastore/ds-git.html)
- [Google Workspace Connector](https://fess.codelibs.org/15.7/config/datastore/ds-gsuite.html)
- [JSON Connector](https://fess.codelibs.org/15.7/config/datastore/ds-json.html)
- [Microsoft 365 Connector](https://fess.codelibs.org/15.7/config/datastore/ds-microsoft365.html)
- [Data Store Connector Overview](https://fess.codelibs.org/15.7/config/datastore/ds-overview.html)
- [Salesforce Connector](https://fess.codelibs.org/15.7/config/datastore/ds-salesforce.html)
- [Slack Connector](https://fess.codelibs.org/15.7/config/datastore/ds-slack.html)
- [Data Store Connector Guide](https://fess.codelibs.org/15.7/config/datastore/index.html)
- [Index Management](https://fess.codelibs.org/15.7/config/index-backup.html)
- [Fess Configuration Guide](https://fess.codelibs.org/15.7/config/index.html)
- [Introduction](https://fess.codelibs.org/15.7/config/intro.html)
- [LDAP Integration Guide](https://fess.codelibs.org/15.7/config/ldap-integration.html)
- [Google Gemini Configuration](https://fess.codelibs.org/15.7/config/llm-gemini.html)
- [Ollama Configuration](https://fess.codelibs.org/15.7/config/llm-ollama.html)
- [OpenAI Configuration](https://fess.codelibs.org/15.7/config/llm-openai.html)
- [LLM Integration Overview](https://fess.codelibs.org/15.7/config/llm-overview.html)
- [Load Control Configuration](https://fess.codelibs.org/15.7/config/load-control.html)
- [Multitenancy Configuration](https://fess.codelibs.org/15.7/config/multitenancy.html)
- [Fess Configuration Properties](https://fess.codelibs.org/15.7/config/properties.html)
- [AI Mode Configuration](https://fess.codelibs.org/15.7/config/rag-chat.html)
- [Rank Fusion Settings](https://fess.codelibs.org/15.7/config/rank-fusion.html)
- [Rate Limiting Configuration](https://fess.codelibs.org/15.7/config/rate-limiting.html)
- [Role-Based Search Configuration](https://fess.codelibs.org/15.7/config/role-setting.html)
- [Groovy Scripting Guide](https://fess.codelibs.org/15.7/config/scripting-groovy.html)
- [Scripting Overview](https://fess.codelibs.org/15.7/config/scripting-overview.html)
- [Search-Related Settings](https://fess.codelibs.org/15.7/config/search-advanced.html)
- [Search Features](https://fess.codelibs.org/15.7/config/search-basic.html)
- [Search-Related Settings](https://fess.codelibs.org/15.7/config/search-config.html)
- [Search Form Integration](https://fess.codelibs.org/15.7/config/search-form-integration.html)
- [Placement of Search Form](https://fess.codelibs.org/15.7/config/search-form.html)
- [Bulk Retrieval of Search Results](https://fess.codelibs.org/15.7/config/search-scroll.html)
- [Role-Based Search Configuration](https://fess.codelibs.org/15.7/config/security-role.html)
- [Virtual Host](https://fess.codelibs.org/15.7/config/security-virtual-host.html)
- [Memory Configuration](https://fess.codelibs.org/15.7/config/setup-memory.html)
- [Port and Network Settings](https://fess.codelibs.org/15.7/config/setup-port-network.html)
- [Windows Service Registration](https://fess.codelibs.org/15.7/config/setup-windows-service.html)
- [SSO Configuration with Entra ID](https://fess.codelibs.org/15.7/config/sso-entraid.html)
- [SSO Configuration with OpenID Connect](https://fess.codelibs.org/15.7/config/sso-oidc.html)
- [SAML Authentication SSO Setup](https://fess.codelibs.org/15.7/config/sso-saml.html)
- [SSO Configuration with Windows Integrated Auth](https://fess.codelibs.org/15.7/config/sso-spnego.html)
- [System-related settings](https://fess.codelibs.org/15.7/config/system.html)
- [Thumbnail Image Configuration](https://fess.codelibs.org/15.7/config/thumbnail.html)
- [Virtual Host](https://fess.codelibs.org/15.7/config/virtual-host.html)
- [Register for Windows Service](https://fess.codelibs.org/15.7/config/windows-service.html)

## Overview & Guides
- [Archives](https://fess.codelibs.org/archives.html)
- [Articles](https://fess.codelibs.org/articles.html)
- [Part 1: Getting Started with Fess](https://fess.codelibs.org/articles/1/document.html)
- [Part 10: How to build in Windows environment](https://fess.codelibs.org/articles/10/document.html)
- [Part 11: Single sign-on with Fess](https://fess.codelibs.org/articles/11/document.html)
- [Part 12: How to use the virtual host function](https://fess.codelibs.org/articles/12/document.html)
- [Part 13: How to display thumbnail images in search results](https://fess.codelibs.org/articles/13/document.html)
- [Part 14: How to use the management API](https://fess.codelibs.org/articles/14/document.html)
- [Part 15: File server crawls that require authentication](https://fess.codelibs.org/articles/15/document.html)
- [Part 16: How to use the search API](https://fess.codelibs.org/articles/16/document.html)
- [Part 17: Database crawl](https://fess.codelibs.org/articles/17/document.html)
- [Part 18: Google Drive Crawl](https://fess.codelibs.org/articles/18/document.html)
- [Part 19: CSV file crawl](https://fess.codelibs.org/articles/19/document.html)
- [Part 2: Migrate from GSS to FSS](https://fess.codelibs.org/articles/2/document.html)
- [Part 3: Web Scraping with Fess](https://fess.codelibs.org/articles/3/document.html)
- [Part 4: Natural Language Processing with Fess](https://fess.codelibs.org/articles/4/document.html)
- [Part 5: Tokenizing for Full-Text Search](https://fess.codelibs.org/articles/5/document.html)
- [Part 6: Analyzer in Japanese](https://fess.codelibs.org/articles/6/document.html)
- [Part 7: Crawling Sites with Authentication](https://fess.codelibs.org/articles/7/document.html)
- [Part 8: Role-based search](https://fess.codelibs.org/articles/8/document.html)
- [Part 9: Fess Active Directory integration](https://fess.codelibs.org/articles/9/document.html)
- [Building an Enterprise Search Environment with Fess - Introduction](https://fess.codelibs.org/articles/article-1.html)
- [Building an Elasticsearch-based Search Server with Fess - Role-based Search](https://fess.codelibs.org/articles/article-2.html)
- [Building an Elasticsearch-based Search Server with Fess - API](https://fess.codelibs.org/articles/article-3.html)
- [Building an Elasticsearch-Based Search Server with Fess – FSS](https://fess.codelibs.org/articles/article-4.html)
- [Fess vs Other Search Solutions](https://fess.codelibs.org/articles/comparison.html)
- [Part 1: Why Enterprises Need Search – Knowledge Utilization in the Age of Information Overload](https://fess.codelibs.org/articles/guide-01.html)
- [Part 2: A 5-Minute Search Experience – First Contact with Fess Using Docker Compose](https://fess.codelibs.org/articles/guide-02.html)
- [Part 3: Embedding Search into an Internal Portal – Adding Search to Existing Websites](https://fess.codelibs.org/articles/guide-03.html)
- [Part 4: Unified Search Across Scattered Files – Building Cross-Search for Multi-Source Environments](https://fess.codelibs.org/articles/guide-04.html)
- [Part 5: Tailoring Search to Users – Role-Based Search Result Control](https://fess.codelibs.org/articles/guide-05.html)
- [Part 6: A Knowledge Hub for Development Teams – Unified Search Across Code, Wiki, and Tickets](https://fess.codelibs.org/articles/guide-06.html)
- [Part 7: Search Strategy for the Cloud Storage Era – Cross-Search Across Google Drive, SharePoint, and Box](https://fess.codelibs.org/articles/guide-07.html)
- [Part 8: Growing Search Quality – A Search Tuning Cycle Based on User Behavior Data](https://fess.codelibs.org/articles/guide-08.html)
- [Part 9: Search Infrastructure for Multilingual Organizations – Building an Environment to Properly Search Documents in Japanese, English, and Chinese](https://fess.codelibs.org/articles/guide-09.html)
- [Part 10: Stable Operation of a Search System – Monitoring, Backup, and Failure Recovery in Practice](https://fess.codelibs.org/articles/guide-10.html)
- [Part 11: Extending Existing Systems with the Search API – Integration Patterns for CRM and Internal Systems](https://fess.codelibs.org/articles/guide-11.html)
- [Part 12: Making SaaS Data Searchable – Integration Scenarios with Salesforce and Databases](https://fess.codelibs.org/articles/guide-12.html)
- [Part 13: Multi-Tenant Search Platform – Designing a Single Fess Instance to Serve Multiple Organizations](https://fess.codelibs.org/articles/guide-13.html)
- [Part 14: Scaling Strategies for Search Systems – Gradual Expansion from Small to Large Scale](https://fess.codelibs.org/articles/guide-14.html)
- [Part 15: Secure Search Infrastructure – SSO Integration and Search Access Control in a Zero Trust Environment](https://fess.codelibs.org/articles/guide-15.html)
- [Part 16: Search Infrastructure Automation – Management with CI/CD Pipelines and Infrastructure as Code](https://fess.codelibs.org/articles/guide-16.html)
- [Part 17: Extending Search with Plugins – Implementing Custom Data Sources and Ingest Pipelines](https://fess.codelibs.org/articles/guide-17.html)
- [Part 18: Fundamentals of AI Search – Evolution from Keyword Search to Semantic Search](https://fess.codelibs.org/articles/guide-18.html)
- [Part 19: Building an Internal AI Assistant – A Search-Based Q&A System Powered by RAG](https://fess.codelibs.org/articles/guide-19.html)
- [Part 20: Connecting AI Agents with Search – Integrating Fess into External AI Tools via MCP Server](https://fess.codelibs.org/articles/guide-20.html)
- [Part 21: Cross-Searching Images and Text – Next-Generation Knowledge Management with Multimodal Search](https://fess.codelibs.org/articles/guide-21.html)
- [Part 22: Drawing an Organizational Knowledge Map from Search Data – Understanding Information Utilization through the Analytics Dashboard](https://fess.codelibs.org/articles/guide-22.html)
- [Part 23: Blueprint for a Company-Wide Knowledge Platform – Grand Design for an Information Utilization Infrastructure Centered on Fess](https://fess.codelibs.org/articles/guide-23.html)
- [Fess Use Cases & Examples](https://fess.codelibs.org/articles/use-cases.html)
- [ASP/SaaS Service](https://fess.codelibs.org/asp.html)
- [Getting Started](https://fess.codelibs.org/basic.html)
- [Fess Robot](https://fess.codelibs.org/bot.html)
- [Fess Architecture and Key Features](https://fess.codelibs.org/class-desc.html)
- [Architecture and Code Structure](https://fess.codelibs.org/dev/architecture.html)
- [Build and Test](https://fess.codelibs.org/dev/building.html)
- [Contribution Guide](https://fess.codelibs.org/dev/contributing.html)
- [Open Source Full-text Search Server](https://fess.codelibs.org/dev/getting-started.html)
- [Open Source Full-Text Search Server](https://fess.codelibs.org/dev/index.html)
- [Development Environment Setup](https://fess.codelibs.org/dev/setup.html)
- [Development Workflow](https://fess.codelibs.org/dev/workflow.html)
- [Development](https://fess.codelibs.org/development.html)
- [Documentation](https://fess.codelibs.org/documentation.html)
- [Open Source Full-Text Search Server - Advertising & Project Support](https://fess.codelibs.org/donation.html)
- [Downloads](https://fess.codelibs.org/downloads.html)
- [Product Support Period](https://fess.codelibs.org/eol.html)
- [How to Use](https://fess.codelibs.org/getting-started.html)
- [Practical Guide](https://fess.codelibs.org/guide.html)
- [Open Source Full-Text Search Server - News](https://fess.codelibs.org/news.html)
- [Others](https://fess.codelibs.org/others.html)
- [Overview](https://fess.codelibs.org/overview.html)
- [Quick Start Guide](https://fess.codelibs.org/quick-start.html)
- [Open Source Full-Text Search Server - Roadmap](https://fess.codelibs.org/roadmap.html)
- [Screenshots](https://fess.codelibs.org/screenshot.html)
- [Installation Guide](https://fess.codelibs.org/setup.html)
- [Commercial Support](https://fess.codelibs.org/support-services.html)
- [Supported File Formats](https://fess.codelibs.org/supported-files.html)
- [Related Projects](https://fess.codelibs.org/supporting-projects.html)
- [Tutorial](https://fess.codelibs.org/tutorial.html)
- [Sites Using Fess](https://fess.codelibs.org/users.html)

## Dev
- [DataStore Plugin Development](https://fess.codelibs.org/15.7/dev/datastore-plugin.html)
- [Fess Developer Documentation](https://fess.codelibs.org/15.7/dev/index.html)
- [Ingest Plugin](https://fess.codelibs.org/15.7/dev/ingest-plugin.html)
- [Developer Documentation Overview](https://fess.codelibs.org/15.7/dev/overview.html)
- [Plugin Architecture](https://fess.codelibs.org/15.7/dev/plugin-architecture.html)
- [Script Engine Plugin](https://fess.codelibs.org/15.7/dev/script-engine-plugin.html)
- [Theme Development Guide](https://fess.codelibs.org/15.7/dev/theme-development.html)
- [Web App Plugin](https://fess.codelibs.org/15.7/dev/webapp-plugin.html)

## Translations
- [ja](https://fess.codelibs.org/ja/llms.txt)
- [de](https://fess.codelibs.org/de/llms.txt)
- [es](https://fess.codelibs.org/es/llms.txt)
- [fr](https://fess.codelibs.org/fr/llms.txt)
- [zh-CN](https://fess.codelibs.org/zh-cn/llms.txt)
- [ko](https://fess.codelibs.org/ko/llms.txt)