Personal Knowledge Management System — The agent becomes your external memory. Forward emails, notes, articles, voice memos via Telegram. Everything gets organized, tagged, cross-referenced, and surfaces as a weekly insight digest.
Second Brain is an AI-powered personal knowledge management service. You send it anything — emails, meeting notes, article links, voice memos, random thoughts — via Telegram or email. It organizes everything into a searchable knowledge base, automatically tags and cross-references it, and sends you a weekly "insight digest" surfacing forgotten but relevant information.
Forward any content to the Second Brain bot: emails (forwarded), article URLs (agent reads and summarizes), voice memos (transcribed + stored), text notes, images of documents. One message to capture it all.
Agent parses each item, extracts key entities, topics, action items, and people mentioned. Assigns tags, creates cross-references to existing items, and files it into logical categories. No manual folders — the agent does it.
Every Sunday, agent reviews the week's captures and surfaces: "You saved 3 articles about AI agents — here's what they said," "Last month you had a meeting about X, here's the note you forgot," "You asked about Y 3 weeks ago — here's a relevant article that just came across."
Ask questions in natural language: "what was that article about the YC batch?" or "did I ever follow up on the marketing campaign?" Agent searches the knowledge base and synthesizes an answer with citations.
Connect: Gmail (auto-archive + capture), calendar (meeting notes capture), Readwise/Instapaper (highlights import), browser bookmark capture, Twitter/X bookmarks. All into one unified knowledge base.
Knowledge base is portable. Export individual items or full collections to Notion, Obsidian (Markdown), or Apple Notes. Second Brain is your capture and intelligence layer; your existing notes app is the storage.
| Tier | Price | Includes |
|---|---|---|
| Individual | $19/month | Unlimited captures, 90-day memory, weekly digest, Telegram + email capture |
| Pro | $39/month | Unlimited memory, all integrations, export to Notion/Obsidian, priority AI |
| Teams | $49/month (up to 5) | Shared knowledge bases, team digest, collaborative tagging |