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Introduction
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Second Brainie

The internet is full of ideas.
Your brain shouldn't hold them all.

Highlight text on any webpage · right-click · AI structures it into your personal wiki with a living 3D knowledge graph.

Select Capture Explore Share
The Problem

You read everything.
You remember nothing.

  • Knowledge workers read 200+ articles, papers, and threads per week
  • 90% of what you read is forgotten within 72 hours — Ebbinghaus forgetting curve
  • Bookmarks pile up, unopened. Notes apps become graveyards. Tabs multiply.
  • The problem isn't finding information — it's that organising it demands discipline you don't have after a long day
  • Notion, Evernote, OneNote make you the filing clerk.
100% 50% 0% 0h 36h 72h Time after reading Memory retained 100% ~10%

Ebbinghaus Forgetting Curve

The Insight

Knowledge is a graph,
not a folder.

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Everything you know is connected. Folders pretend it isn't.

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The most valuable insight isn't the article you saved — it's the unexpected link between two things you read 6 months apart.

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What if your notes organised and connected themselves?

Ideas Projects People Concepts Goals Links
The Solution

Your self-building second brain.

🖱️
Capture
Select any text on any page. Right-click. Done. Source URL, page title, and timestamp saved automatically — zero effort from you.
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Organise
A local AI processes every capture in the background. Writes a proper wiki page. Extracts keywords, links related ideas — overnight.
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Explore
Your knowledge becomes a living 3D graph. Every node is a page, every edge a connection. Fuzzy links surface ideas you didn't know were related.
How It Works

Three seconds to capture.
A lifetime of insight.

1
Highlight text on any article, paper, tweet, or PDF
2
Right-click → "Send to Second Brainie" → pick a category: Projects · People · Concepts · Goals · Business
3
AI enriches it overnight: summary, tags, wikilinks, key points — all running locally on your own machine
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Open Second Brainie — the 3D graph has grown a new node, connected to everything related
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Click any node → read the wiki page → cite it in APA 6 or Harvard with one click
Who It's For

For anyone whose job
is to know things.

The Researcher
PhD students · Academics
Capture papers, connect arguments, never lose a reference. Auto-generates APA 6 and Harvard citations from the source URL.
The Professional
Consultants · Analysts · Lawyers
Build institutional knowledge that lives in your brain, not just in your org's Slack. It follows you when you move on.
The Writer & Creator
Journalists · Bloggers · Creators
A swipe file that indexes itself. Never lose a quote, stat, or story angle again. Every capture is sourced and dated.
The Curious Mind
Lifelong learners · Autodidacts
Turn reading the internet into a compounding knowledge asset that grows richer the longer you use it.
Positioning

You're not replacing your tools.
You're finally using what you read.

ToolWhat it doesWhat Second Brainie adds
Notion / ObsidianManual writing & organisationZero-friction capture; AI does the structuring
Google Keep / Apple NotesQuick capture, no structureAI structure + cross-linking + 3D graph
Bookmarks / PocketSave URLs you never revisitSaves the insight, not just the link
Your own memoryUnreliable, fades fastPermanent, searchable, connected

Second Brainie works alongside every tool you have. It catches what falls through the cracks.

Business Model

Free forever for personal use.
Here's why.

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Knowledge Compounds
The more people use it, the more valuable the shared knowledge layer becomes. We need critical mass before monetising.
🔗
Network Effects
When you share a Brainie page, the recipient wants to capture their reaction. Sharing is the growth engine.
🤝
Trust First
Your second brain is intimate. You need to trust the product before you pay. Free removes the barrier entirely.
Freemium: Personal use is free. Team brains, advanced AI models, and org-wide knowledge graphs are the paid tier.
Growth Strategy

Why someone opens the extension store
at 11pm.

📑

They just read something important and lost it in a pile of tabs

🔗

A colleague shares their public knowledge graph — the referral loop triggers

📰

They see a shared Brainie wiki page linked in a blog post or Reddit thread

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They're starting a research project and dreading the note-taking

Install friction: ONE click, no account until first capture, connects to existing Google login.  ·  Retention hook: The graph. Once you see your knowledge visualised in 3D, you want to keep adding to it.
Roadmap

From personal tool to
collective intelligence.

1
Capture
Now – Q2 2025
Chrome extension. AI enrichment. 3D graph. Free, private.
2
Share
Q3 2025
Public brain profiles. Shareable wiki pages. "Powered by Brainie" links.
3
Collaborate
Q4 2025 – Q1 2026
Team brains. Shared knowledge bases. Comments, forks, merges.
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Connect
2026+
Cross-brain links. Wikipedia for personal knowledge, bottom-up.
Milestones

The numbers that matter.

Launch · May '25
Chrome Web Store + Product Hunt. Goal: 500 installs week 1.
500
Month 3
2,000 active users. First shared graphs on Twitter/X and Reddit PKM communities.
2K
Month 6
10,000 installs. Public brain profiles live. First graph goes viral in academic Twitter.
10K
Month 12
50,000 users. Team brains beta. First university onboarded as institutional user.
50K
Year 2
200,000 users. Mobile app. API for developers. Knowledge graph federation.
200K
Year 3
1M users. The knowledge layer — where human understanding lives.
1M
Vision

What if every person's
knowledge was connected?

The internet gave us access to all human information. Search engines helped us find it.

Second Brainie is what happens after you find it — the place where understanding lives. Every note you take adds to your graph. Every graph you share adds to ours.

"The goal isn't better note-taking. It's a world where knowledge doesn't die with the person who had it."
Get Started

Start building your
second brain today.

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Install free — Chrome Web Store · search "Second Brainie"

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Share your first graph — your knowledge is more useful when others can see it

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Tell one person — that's how second brains spread

brainie-28d4c.web.app

Your future self will thank you for the notes you take today.