Always on. Always quiet.
Flip the extension on and connect it once. From then on, DoppelBrain quietly captures the pages you visit. You don't open it. You don't click anything. It just remembers.
DoppelBrain remembers everything you read online. Find it again with a simple question. It can even suggest what to read or where to go next, based on your interests.
DoppelBrain is a personal knowledge base built from your browsing and AI chats. A lightweight Chrome extension captures what you read, and your AI assistants connect via the Model Context Protocol (MCP) so every model already has your context.Takes 2 minutes. No credit card. Works inChrome.
Works alongside with AI you already use.
Set it up once. DoppelBrain does the rest.
One click and you're set. Nothing to learn. Nothing changes about how you use the internet.

DoppelBrain quietly remembers the articles and pages you visit. It tidies them up for you in the background.

Open your dashboard. Type a question in plain English. Get the article and a clear answer.

Flip the extension on and connect it once. From then on, DoppelBrain quietly captures the pages you visit. You don't open it. You don't click anything. It just remembers.
Banking, health, and other private sites sit on a constantly updated blocklist. The moment you land on one, DoppelBrain switches itself off. Nothing is read, nothing is stored, and you can't even leave it on by accident.
Type your question into ChatGPT, Claude, or Gemini exactly like before. Behind the scenes, DoppelBrain hands them the parts of your reading that matter, and they weave it into the answer.
ChatGPT, Claude, Gemini. Connect them all at once. They draw from the same DoppelBrain, so the context you built up in one AI carries over to the next.
ChatGPT only remembers chats with ChatGPT. Gemini only remembers Gemini. Neither knows what you actually read. DoppelBrain captures your browsing, and shares it across every AI you connect.
Each AI only remembers chats with itself. Your browsing is invisible.
Open 20 tabs hunting for that article from last week
Type "the piece about good sleep" and find it in seconds
SearchRepeat your background story to ChatGPT every time
ChatGPT already knows what you read. It gives smarter answers right away
ChatGPTForget the helpful tip from that newsletter three months ago
Ask DoppelBrain. Get the answer plus the original article
Ask DoppelBrainBookmarks and saved links piling up everywhere
Everything you read in one tidy place. No folders to manage
Your dashboardSound familiar?
You grab the wrong file. DoppelBrain quietly fixes it for you, without you ever knowing it happened.
“Can you tighten up the Q3 budget memo for tomorrow’s leadership call?”
“Heads up: you attached v1 from two weeks ago, but you’ve been working on Q3_Budget_FINAL_v3.docx this morning, and Sarah’s CFO-approved figures are in there. Want me to use v3 instead and fold in the new marketing numbers?”
A memory for the things you read online. One that actually remembers.
Forgot where you saw an article? Type a few words. DoppelBrain finds it in seconds. Even from months ago.
Talk to your reading like you would a friend. Ask "what did that doctor say about cholesterol?" and get a clear answer. With the link.
No folders. No tags. No fuss. DoppelBrain groups everything by topic on its own. Just keep reading the way you always have.
DoppelBrain learns what you care about. It can suggest articles, sites, even places to visit that match your interests. A friendly nudge. Never spam.
If you keep losing the good bits you find online, DoppelBrain is for you.
Love reading about health, history, or your hobbies? DoppelBrain keeps it all. Find it again whenever you need it.
Tired of repeating yourself? DoppelBrain shares your reading with them. They actually know you, beyond the chats you've had.
Articles you saved for later. Tabs you never got to. Helpful posts from a colleague. DoppelBrain keeps them together and finds the right one when you ask.
Connect DoppelBrain to ChatGPT or Claude. They remember what you've read. You get better answers right away. No more starting from scratch.
Private. Careful. Only ever for you.
Your reading is private. No one else can read it. Not us. Not anyone.
We use the same security standards as banks. We're also working toward SOC 2 certification.
One click and it's gone for good. You can also download a copy first if you'd like.
What you read is yours. We never use it to train AI. We never sell it.
Short, honest answers.
DoppelBrain remembers what you read online. It also remembers your chats with AI helpers like ChatGPT. It tidies things up by topic on its own. Later, you can find anything in plain English. Even months down the road.
Sign up with your email. Add DoppelBrain to Chrome in one click. That's it. From then on, the things you read are quietly remembered. You don't need to tag, file, or organize a thing.
Open your dashboard. There's a one-click setup for ChatGPT, Claude, and others. Once connected, they use what you've already read. You get better, more personal answers. No more repeating your background story.
It's stored in a secure, encrypted account only you can access. Every connection uses the same kind of encryption your bank uses. No one else can read it. Not even the team at DoppelBrain.
No. Never. What you read is yours. We don't train AI on it. We don't share it. We don't sell it.
Yes, any time. One click in your dashboard wipes it all. You can also download a copy first if you'd like. We don't keep hidden copies.
Not at all. DoppelBrain groups your reading by topic on its own. No folders to manage. Nothing for you to file. Just read the way you always have.
Yes. DoppelBrain learns what you care about. It can suggest articles, sites, and even places to go that match your interests. You stay in control. It's just a friendly nudge, never spam.
DoppelBrain is free during Beta. No credit card needed. We'll tell you before that changes. Beta users get a nice discount on any paid plan.
A bookmark only saves the link. DoppelBrain remembers what was actually inside the article. You can search by what it was about, even if you forget the website. It also remembers your AI chats. Bookmarks can't do that.
Yes. Type something like "that article about better sleep" and DoppelBrain finds it. You also get a short summary. Ask follow-up questions too. It answers in plain English with the original article attached.
Normally they forget the moment you close the chat. Connect them to DoppelBrain and they can look back at past conversations. They pick up where you left off. It's the simplest way to give them a real memory.
Free during Beta. No credit card. Two minutes to set up.