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-hosted for free — or a cloud vault hosted in Switzerland: strong privacy laws, GDPR-adequate
- 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 whole vocabulary of the app. No workspaces, no projects, no database to configure before you can write a sentence.
Live co-editing
Write the same page with someone else at once, and share any page or section as a read-only link.
Always exportable
Pages are plain markdown at rest. Walk away with a zip of
.md files whenever you like.
Tasks, boards and due dates aren't separate things to manage — they're 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
€5 / month
- 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
Bring your own agent
brainlog has a built-in MCP server, so Claude Code, Claude Desktop, ChatGPT and other MCP clients can create pages, write and edit notes, and work your task lists and boards — through the same markdown rewriters the app itself uses. It cannot delete anything: the toolbox exposes no delete, trash, revoke or remove operation of any kind.