01pillar
Capture without ceremony
Notes, books, MOCs, pipeline posts - every thought has a home. Markdown stays on your disk; the database is just a faithful reflection of it.
Private knowledge system
Your second
brain, finally
on your side.
Second Brain is a local-first, AI-native workspace for the notes, books, MOCs and pipelines you've been collecting for years. Your archive stays on your disk. Agents come to you, not the other way around.
02pillar
Linked the way you actually think
Backlinks, kinds, and tags compose into a graph your future self can traverse. No vendor lock-in. No syncing tax. No flat feed.
03pillar
Agents that read your work
Local-first by default, AI-native by design. Plug in an agent and let it reason over your archive, not someone else's training data.
For whom
Built for the kind of person who keeps a notebook.
- Builders & researcherswho need a private corpus to think alongside, not a public stream to perform on.
- Writers & operatorswho keep MOCs, reading notes and pipelines and want them to compound over years, not weeks.
- Teams that own their dataand want agents that read it, with no copy leaving the disk by default.
Begin
Sign in to Second BrainThe archive is empty until you arrive.
Sign in to claim a workspace and start linking thoughts that finally stay yours.