--- title: "Eidos File — a single-file relational spreadsheet for you and your agent" description: "Keep tables, relations, formulas, and views in one local SQLite file. Privacy by default, with sync and publishing when you choose." source: "https://eidos.space/" lang: "en" --- Eidos File · SQLite # A single-file relational spreadsheet, for you and your agent. Tables, relations, formulas, and views live in one standard SQLite file. Use the same file from the desktop, browser, CLI, or an agent. [ Download Eidos ](https://eidos.space/download) [ Open Web Editor ↗](https://editor.eidos.space/) Privacy by default · Open format · Standard SQLite ![A personal library in Eidos on desktop, alongside the experimental iOS and Android apps](https://eidos.space/images/eidos-cross-platform.webp) Desktop · Web · CLI | iOS and Android are experimental Eidos Lite · Data ownership ## Eidos is just a file. And like any other file, it's yours. library.eidos sits in the same folder as notes.md and paper.pdf. No sign-in, no import, copy the whole thing anywhere. Own the file, control the data. research-space Favorites - Recents - Documents - Downloads - research-space Name Date Modified Size - library.eidos Today at 10:15 AM 1.2 MB - interviews.eidos Today at 9:32 AM 840 KB - notes.md Yesterday at 5:44 PM 12 KB - paper.pdf Sunday at 2:12 PM 2.1 MB - covers Sep 8, 2026 at 4:20 PM 64 items - scripts Sep 3, 2026 at 11:05 AM 8 items 2 Eidos files · 2 documents · 2 folders · all on your own disk Malleable Software ## Make Eidos fit your work. Your files at the center. Build views, actions, and workflows around them. [Explore community plugins](https://community.eidos.space/) [Build a plugin](https://docs.eidos.space/plugins/guide/) **.eidos** Your files. Your data. - [ **Chart** ](https://community.eidos.space/plugins/eidos.chart) - [ **Map** ](https://community.eidos.space/plugins/eidos.map) - [ **Smart Actions** ](https://community.eidos.space/plugins/eidos.smart-actions) - [ **Markmap** ](https://community.eidos.space/plugins/eidos.markmap) - [ **Journals** ](https://community.eidos.space/plugins/eidos.journals) - [ **Forest** ](https://community.eidos.space/themes/eidos.forest-theme) - [ **Maple Mono** ](https://community.eidos.space/themes/eidos.maple-theme) - [ **Build a plugin** ](https://docs.eidos.space/plugins/guide/) - [ **More plugins** ](https://community.eidos.space/) Eidos Lite · Local version history ## Review changes. Restore when needed. [ Powered by Graft · Version control built for SQLite ](https://graft.eidos.space/) **Row changes**6 changed rows3 of 9 columns | Change | Row | \_updated\_at | Status | Rating | | ------ | ---- | -------------------------------------------------- | ------------------- | ------- | | \~ | \_id | −2026-10-20T05:59:19.605Z+2026-10-20T05:59:20.554Z | −Watching+Finished | −3+5 | | \~ | \_id | −2026-10-20T05:59:19.625Z+2026-10-20T05:59:20.569Z | −Watchlist+Finished | −null+5 | | \~ | \_id | −2026-10-20T05:56:16.633Z+2026-10-20T05:59:20.584Z | −Watching+Finished | −4+5 | | \~ | \_id | −2026-10-20T05:56:16.633Z+2026-10-20T05:59:20.600Z | −Watchlist+Watching | −null+4 | | \~ | \_id | −2026-10-20T05:56:16.633Z+2026-10-20T05:59:20.615Z | −Watching+Finished | −4+5 | | \~ | \_id | −2026-10-20T05:56:16.633Z+2026-10-20T05:59:20.630Z | −Watchlist+Watching | −null+4 | **Versions** **2 changed files · 7 loaded row changes** Click to review; check files to save separately. **Changes**2 2 tables_M_ _M_ 2 selected **Version note** Interactive demo · One local history for files and data Spark ## Spark. A one-time purchase. Support Eidos development and get early access to file metadata management and custom sync servers. [Discover Spark](https://eidos.space/spark) Sync and sharing ## Local first. Connected when needed. Keep working locally. Sync your phone and computer directly over the same local network, use cloud sync between computers, or publish files to the web when you want to share. [ Cloud service pricing →](https://eidos.space/pricing) 01 · LAN sync ### Your phone and desktop, connected directly. Pair your Android or iOS app with Eidos Lite to sync files and changes over the same local network. No cloud account required; each device keeps a local copy you can use offline. [ How to connect →](https://docs.eidos.space/user-guide/sync/) 02 · Eidos Sync · Cloud ### Change computers. Keep working. Sync changes and history between computers with end-to-end encryption. Each computer works on its local files. [ Explore Sync →](https://eidos.space/sync) 03 · Eidos Publish · Preview ### Publish files to the web. Share them your way. Set the address and access; Forms can also collect responses into your file. [ Explore Publish →](https://eidos.space/publish) Eidos File · SQLite ## Structured data you can keep reading. Every .eidos file is SQLite. Standard SQLite tools can read its real tables today or years from now. 1. 01 · Create a file and table ``` eidos file new library.eidos \ --table library --label-field title \ --fields '[{"name":"title","type":"text"},{"name":"author","type":"text"}]' ``` 2. 02 · Add a row ``` eidos data mutate library.eidos \ --table library \ --expected-revision 1 \ --insert '{"title":"Chaos: Making a New Science","author":"James Gleick"}' ``` 3. 03 · Read it with SQLite ``` sqlite3 -header -column library.eidos \ 'SELECT title, author FROM library;' ``` SQLite output ``` title author --------------------------- ------------ Chaos: Making a New Science James Gleick ``` Start working local-first. [ Download Eidos ](https://eidos.space/download) Free core local tools · No account required Is Eidos right for you? - [ File ownership Local files, private by default ](https://eidos.space/#ef-space) - [ Malleable Software Customize logic and UI with plugins ](https://eidos.space/#ef-plugins) - [ Version control Local history you can review and restore ](https://eidos.space/#ef-versioning) - [ Local-first, not local-only Collaborate across devices, publish and share ](https://eidos.space/#ef-services) - [ Open format Standard SQLite, durable and yours ](https://eidos.space/#ef-closing) Every box matches. Eidos fits.