An open format. Local-first. A file-based spreadsheet.
Open the same .eidos file in the browser, desktop app, or terminal—and let agents work with it safely.
Get started
Section titled “Get started” Web Editor Create or open a local Eidos File without installing an application.
Eidos CLI Create a file, open the local editor, run queries, and automate changes.
Eidos Lite Use an ordinary folder as a Space for Eidos Files, other files, and local history.
The Web Editor, CLI, and Eidos Lite 0.1.2 are available now. macOS Lite installers are signed and notarized; Windows and Linux installers are unsigned. Lite 0.1.2 uses Graft 0.3.8 for reliable incremental Pull and cancellation recovery. Sync remains an invite-only private preview.
Eidos File
Section titled “Eidos File”An Eidos File is a portable SQLite file for typed tables, relations, formulas,
and saved views. Web Editor, Eidos Lite, and eidos serve use the same editor
and Runtime.
User guide Learn how files, views, saving, history, and recovery work.
CLI reference Use JSON commands for queries, validation, and atomic changes.
Developer documentation Use the Runtime and shared React UI in your own application.
Specifications Read the File Format, Runtime, Adapter, and UI contracts.