BAALDA

A Second Brain, Shared.

The team second brain. Plain Markdown files on your disk, edited together in real time, and read and written by your AI like a teammate.

Free & open source · Apache-2.0 · v0.1.83 · macOS · Windows · Linux

Setup & support

One-on-one support,from the Baalda creator

Get your team’s Second Brain set up properly, then keep it working. Support runs through the Ben AI Accelerator, alongside a community of 1k+ professionals getting results with AI.

Join the Ben AI Accelerator

• Unlimited 1:1 calls
• Weekly onboarding
• Courses & templates
• Community support

Not a folder of notes.Your team’s memory.

Notes

Tasks

Graph

Vaults

Files

Plain markdown,on your own disk

Every note is a real.md file in a folder you own. No database, no proprietary block format, no export button to beg for. Your context outlives every tool built on top of it, Baalda included.

Learn more

• Plain markdown
• Works offline
• Backlinks & graph
• No lock-in

~/team-vault

Q3 strategy.md

edited 2m ago

Architecture decisions.md

Ana, live

Hiring loop.md

private

Daily/2026-09-21.md

you

Q3 strategy.md

Q3 strategy

---

## Where we are

Three bets this quarter. Each one has an owner and a doc. See [[Pricing experiments]] and [[Self-host GA]].

## Open questions

Anna is editing this paragraph right now, and the merge is clean. No conflict dialog, no duplicated section, no lost work. The file on disk is the same file your assistant reads.

Connect

Your AI writes in the same files you do

Connect an assistant over MCP and it works in your markdown as a real collaborator. Its writes flow through the same sync as human edits, as operations rather than whole-file overwrites.

Learn more

MCP clients

What it can do

• Read any note it has access to
• Write plain markdown back
• Merge as operations, never whole-file overwrites
• Respect the same per-file permissions you set
• Follow wikilinks and backlinks
• Leave a version history you can walk back

What teams build

Open source

Apache-2.0Read the source, self-host the backend

Apache-2.0Free and open source, forever

Local-firstPlain.md files on your own disk

Real-time CRDTKeystroke-level merge, no conflict dialogs

Model Context Protocol

MCP-nativeYour AI edits the same files you do

Collaborate

Everyone in the same note, at once

Open the same file together. A CRDT merges every keystroke, so two people, or ten, never clobber each other’s work. No conflict dialogs, no lost strategy docs.

Learn more

Live presence

Anaediting ## Open questions

Sarareading

Youediting ## Where we are

3 people in this note

Per-file permissions

Q3 strategy.mdTeam · editor

Architecture.mdTeam · viewer

Hiring loop.mdPrivate

Share a folder, then lock one file inside it.

Version history

Q3 strategy.md

---

14:02Anaadded ## Open questions

11:47Clauderewrote the summary

09:15Youcreated the note

Every edit is an operation you can walk back.

Multi-device sync

MacBook Proin sync

Studio Display Macin sync

Linux boxoffline, 2 edits queued

Converging in milliseconds, not maybe-in-two-hours.

Vaults

One per team or client,
permissioned separately

Product vault

Shared

📄Q3 strategy

🗒️Release notes

Folders

📁Specs

Client vault

Shared

📘Brand guide

Private

🔒Commercials

Folders & Tags

Classic structure for clear
hierarchies

Folders

📁Specs

🧭Decisions

🧪Research

📆Daily

Tags

#roadmap

#rfc

Graph

Backlinks that survive
renames

Linked fromLinks

Q3 strategy7

Pricing experiments4

Self-host GA3

Architecture decisions3

Hiring loop2

Millionsof notes in one workspace, with no slowdown

Thousandsof teammates online and in sync at once

Hundredsof people editing together, live, in one space

Instantevery note is up to date before you open it

Need more? Baalda scales out to tens of thousands of people working at once.

Free

For you and one teammate. Self-host with no limits.

$0 / forever

Download for free

Team

For teams of 3 or more, on one account across every vault.

$10 / seat / month

or $110 per seat a year · minimum 3 seats

See pricing

Or self-host the backend, free

Start your team’s brain

Free and open source. No account needed.