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 · v0.1.86 · 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
The tour · 1:28
The whole app, in 88 seconds.
Not a folder of notes.
Your team’s memory.
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.
- Plain markdown
- Works offline
- Backlinks & graph
- No lock-in
Q3 strategy.md
edited 2m agoArchitecture decisions.md
Ana, liveHiring loop.md
privateDaily/2026-09-21.md
youQ3 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.
- 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
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.
3 people in this note
Share a folder, then lock one file inside it.
Q3 strategy.md
14:02Anaadded ## Open questions
11:47Clauderewrote the summary
09:15Youcreated the note
Every edit is an operation you can walk back.
Converging in milliseconds, not maybe-in-two-hours.
Organize
Structure that survives
a growing team
Separate vaults per team, classic folders and tags inside them, and a graph of how your team’s thinking actually connects
Vaults
One per team or client,
permissioned separately
Shared
Q3 strategy
Release notes
Folders
Specs
Shared
Brand guide
Private
Commercials
Folders & Tags
Classic structure for clear
hierarchies
Specs
Decisions
Research
Daily
roadmap
rfc
Graph
Backlinks that survive
renames
Built to scale
From your notes to your whole company
Most tools slow to a crawl as your notes pile up or your team grows. Baalda doesn’t. Everything stays quietly up to date in the background, so the moment you click, it’s already there.
Learn more about how Baalda scalesNeed more? Baalda scales out to tens of thousands of people working at once.
Built in the open
Baalda is Apache-2.0. Read the source, run the backend yourself, or open an issue and tell us what’s missing.
Pricing
Free for you and a teammate.
Per seat when the team grows.
The app is free and open source, and so is sync for two. Team adds seats, vaults and file sync.
Free
For you and one teammate. Self-host with no limits.
- 2 people and 1 synced vault
- Unlimited notes and attachments
- Real-time collaboration
- MCP for your AI tools
- Works offline, files stay on your disk
- Self-host the backend, no limits (Apache-2.0)
$0 / forever
Download for freeTeam
For teams of 3 or more, on one account across every vault.
- Everything in Free
- Unlimited people, one seat each
- Unlimited synced vaults
- Standalone file sync
- Priority support
$10 / seat / month
or $110 per seat a year · minimum 3 seats
See pricingStart your team’s brain
Free and open source. No account needed.