Notarium
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A quiet place to write things down.

Plain-text notes with versioning, offline sync and no telemetry. Your archive is a folder of files — export it any time, or just walk away.

Start a notebook
“I moved eleven years of research notes over in an afternoon and nothing broke.” — L. Arendt, translator

Files, not lock-in

Everything is Markdown on disk. The sync layer is optional and the format is documented.

Version history

Every save is a revision. Diff any two points, restore a paragraph, keep working.

Offline first

The desktop client is fully usable with the network off; conflicts are resolved on reconnect.

Shared notebooks

Invite up to twelve collaborators per notebook with read or write access.