---
title: "Eidos Docs | Eidos Docs"
description: "Local-first, open-format structured data. Explore Eidos File, Eidos Lite, and developer tools."
source: "https://docs.eidos.space/"
lang: "en"
---

# Local-first, open-format structured data.

Store tables and notes in standard local SQLite files with complete data ownership. Find guides for everyday editing, CLI automation, plugin development, and open format specifications.

[User Guide](https://docs.eidos.space/user-guide/)[Developer Tools](https://docs.eidos.space/cli/)

## Start with the file

**Eidos File** is an open, SQLite-backed format for structured data. A `.eidos` file stores tables, typed fields, records, and saved views. You can open this file in the Web Editor, edit it with the CLI, or embed it in your applications.

**Eidos Lite** is a desktop application for local folders. That folder is your **Space**. Lite keeps `.eidos` files alongside Markdown notes and attachments. Lite includes local history and optional Sync. All local files remain usable offline without an account.

One Space. Ordinary files.

- ### DirectoryResearch/ Space · a local folder  
   - **books.eidos** Tables, fields, records, and views  
   - notes.md Markdown notes  
   - ### Directoryassets/  
         - cover.jpg A cover image referenced by the book list

Inside books.eidos, the Books table has fields such as Title and Status. Each record represents a book. The Reading view saves its filter and layout.

When you move the data, include its referenced local files.

## For Users

Manage personal notes, structured data, and documents on your computer.

[01**Work in a local Space**Install Eidos Lite. Open a local folder. Create your first table.](https://docs.eidos.space/getting-started/eidos-lite/)[02**Open a file in your browser**Inspect and edit an Eidos File without installing software.](https://docs.eidos.space/getting-started/browser/)[03**Understand the core concepts**Learn how files, tables, fields, records, and views work together.](https://docs.eidos.space/concepts/)[04**Protect and sync your data**Check storage locations, manage backups, and configure sync.](https://docs.eidos.space/user-guide/data-safety/)

## For Developers

Automate tasks, build extensions, or integrate with the Eidos File ecosystem.

[05**Automate with the CLI**Inspect files, query records, and run scripts or AI agent skills.](https://docs.eidos.space/cli/)[06**Build a plugin**Create custom page views, file handlers, and commands with TypeScript.](https://docs.eidos.space/plugins/)[07**Read the specifications**Review the formal SQLite schema, Runtime rules, and Adapter contracts.](https://docs.eidos.space/specifications/)