Open-source second brain

Save anything.
Actually find it again.

SuperMind is a personal second brain for the things you want to keep — links, articles, and ideas — captured from any device and kept reliably retrievable, so your library never becomes a graveyard.

Runs on your own Firebase · MIT licensed · no lock-in
Three ways in

One brain, everywhere you are

Web

Library

Browse, search, and organize everything you have saved in one reverse-chronological feed.

Extension

One-click save

Save the current page — title, link, preview image, and selection — from Chrome in a single click.

Mobile

Capture anywhere

Jot ideas on the go and save shared content straight from the Android share sheet.

Available now — v1

Everything you need to capture and retrieve

One-click save

Capture the current page or shared content in a single action.

Quick text capture

Write down a raw idea instantly, with no required fields.

Unified library

Every save from every device in one place, newest first.

Keyword search

Find anything across titles, notes, and tags.

Tags & filtering

Organize with tags and filter the feed to what matters.

Real-time sync

Save on one device and see it on another instantly.

Private by default

Email sign-in with strict per-user data isolation.

Self-hosted

Runs on your own Firebase project. Your data stays yours.

How it works

Capture, store, retrieve

01

Capture

Save a link or a thought from any device in under two seconds.

02

Store

Everything syncs to one private, unified library in real time.

03

Retrieve

Search and filter to surface the right item the moment you need it.

Coming in v2

An intelligence layer for your library

The next release turns a well-kept archive into a true second brain — one that summarizes, connects, and resurfaces what you save.

Planned

AI summaries

Condense long articles and threads into a few lines so you remember why you saved them.

Planned

Automatic tagging

Categorize every save on ingest, removing manual organizing.

Planned

Ask your brain

Natural-language search that retrieves by meaning, not just keywords.

Planned

Connections

Related saves surface each other, turning a flat list into a web.

Planned

Resurfacing

Older saves return at the right moment, so nothing is forgotten.

Planned

Voice & OCR

Speak an idea to capture it, and make text inside images searchable.

Open source

Your second brain, on your terms

SuperMind is built on a single managed Firebase project and released under the MIT license. Clone it, run your own instance, and keep full ownership of your data.

Start your second brain today.

Get started →