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Brain
Notes, mail and tasks on a folder of Markdown files
Notes as Markdown files on your own server, committed to git on every save. Mail and tasks in the same window. An MCP server lets Claude read, write, sort and send for you, with every action logged. MIT, one command to install.
Hey everyone! 👋
I'm Michael, a product designer, and Brain is the notes app I built for myself and then kept building.
The short version: it's a notes app you run on your own server. Your notes are plain Markdown files in a folder, committed to git on every save, so you can grep them, back them up, or leave. The editor is quiet and monochrome. Mail and tasks live in the same window, because that's where my day actually happens.
The part I'm most excited about: Brain has an MCP server. I connect Claude with OAuth, give it the scopes I want, and it works in my notebook the way I do: writes a page, sorts my inbox, replies from the account I name, moves an attachment into a note, finishes a task. Everything it does shows up in the bell and in an activity log, so it's never a mystery what my agent did while I was away.
It's MIT, installs with one command on a 2 GB box, and updates itself from GitHub releases.
I'd love to hear what you'd want from a self-hosted notes app, and what would stop you from trying one. Happy to answer anything about the files-as-source-of-truth design or the MCP.
Thanks for looking 🙏
About Brain on Product Hunt
“Notes, mail and tasks on a folder of Markdown files”
Brain was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #22 on the daily leaderboard. Notes as Markdown files on your own server, committed to git on every save. Mail and tasks in the same window. An MCP server lets Claude read, write, sort and send for you, with every action logged. MIT, one command to install.
On the analytics side, Brain competes within Productivity, Open Source, Notes and GitHub — topics that collectively have 780.6k followers on Product Hunt. The dashboard above tracks how Brain performed against the three products that launched closest to it on the same day.
Who hunted Brain?
Brain was hunted by Michael Browk. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Brain including community comment highlights and product details, visit the product overview.
Michael Browk