brainlog
Think it. log it.
Markdown-based notes, with project management surfaced as a view over the checkboxes you already wrote.
Privacy by design
brainlog is built for people who want control over their data, not trade-offs.
- Self-host for free, or use a cloud vault hosted in Switzerland — strong privacy laws, GDPR-adequate
- Optional end-to-end encrypted folders — the server stores only ciphertext
- No ads, no trackers, no data resale — monetization is subscription-based only
- Full export to Markdown at any time — your data is portable and stays yours
- Controlled sharing: public links with optional expiration dates
Markdown that renders as you type
Type **bold** and it becomes bold, inline — no split
preview pane, no source mode to switch out of.
Folder → Section → Page
The entire structure of the app. No workspaces, no projects, nothing to configure before you start writing.
Live co-editing
Edit the same page together in real time, and share any page or section as a read-only link.
Always exportable
Pages are stored as plain markdown. Download any folder as a zip
of .md files at any time.
Tasks, boards and due dates aren't separate objects to manage — they are views over what you wrote. See how it works.
Pricing
Local vault
Free
- Desktop app (beta: Ubuntu, Windows and macOS)
- Everything lives in a vault folder on your own machine
- Works fully offline
- AI agents connect locally: Claude Code and Claude Desktop
Copying the vault folder is a full backup. Local vaults work in the Linux and macOS builds today; the Windows build is cloud-only for now.
Cloud vault
€3 / month or €30 / year
- Live co-editing across every device you use
- Share links and invites that work from anywhere
- Phone access via the installable web app
- Hosted in Switzerland, backed up daily
- AI agents connect from anywhere: ChatGPT, claude.ai, Claude Cowork
Payment is handled by Stripe. Your vault is activated within a day of subscribing — already have an account? Sign in.
Bring your own agent
brainlog has a built-in MCP server, so Claude Code, Claude Desktop, ChatGPT and other AI tools can create pages, write and edit notes, and update your task lists and boards — using the same mechanisms as the app itself. The connection is deliberately unable to delete anything: destructive actions remain yours alone.