Never lose what you read
online again.
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.
Three simple steps.
Set it up once. DoppelBrain does the rest.
Add it to Chrome
One click and you're set. Nothing to learn. Nothing changes about how you use the internet.
Keep reading like you always do
DoppelBrain quietly remembers the articles and pages you visit. It tidies them up for you in the background.
Find or ask anything
Open your dashboard. Type a question in plain English. Get the article and a clear answer.
Before and after DoppelBrain
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?
More than a list of bookmarks.
A memory for the things you read online. One that actually remembers.
Find anything you read
Forgot where you saw an article? Type a few words. DoppelBrain finds it in seconds. Even from months ago.
Ask in plain English
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.
Sorts itself out
No folders. No tags. No fuss. DoppelBrain groups everything by topic on its own. Just keep reading the way you always have.
Suggests what's next
DoppelBrain learns what you care about. It can suggest articles, sites, even places to visit that match your interests. A friendly nudge. Never spam.
Made for people who read a lot online.
If you keep losing the good bits you find online, DoppelBrain is for you.
Lifelong learners
Love reading about health, history, or your hobbies? DoppelBrain keeps it all. Find it again whenever you need it.
ChatGPT, Claude, Gemini, Grok, and DeepSeek users
Tired of repeating yourself? DoppelBrain shares your reading with them. They actually know you, beyond the chats you've had.
Busy professionals
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.
Make ChatGPT and Claude smarter about you
Connect DoppelBrain to ChatGPT or Claude. They remember what you've read. You get better answers right away. No more starting from scratch.
ChatGPTClaudePerplexityGeminiGrokDeepSeekYour reading stays yours
Private. Careful. Only ever for you.
Only you can see it
Your reading is private. No one else can read it. Not us. Not anyone.
Bank-level security
We use the same security standards as banks. We're also working toward SOC 2 certification.
Delete it any time
One click and it's gone for good. You can also download a copy first if you'd like.
Never used to train AI
What you read is yours. We never use it to train AI. We never sell it.
Common questions
Short, honest answers.
What does DoppelBrain actually do?
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.
How do I set it up?
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.
How does it work with ChatGPT or Claude?
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.
Where is my information kept and is it safe?
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.
Is my reading used to train AI?
No. Never. What you read is yours. We don't train AI on it. We don't share it. We don't sell it.
Can I delete everything if I want to leave?
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.
Do I have to organize or tag things myself?
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.
Can it suggest things to read or check out next?
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.
How much does it cost?
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.
How is this different from saving bookmarks?
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.
Can I search my reading history in plain English?
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.
Will ChatGPT or Claude remember our past conversations?
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.
Stop losing the things
you've already read.
Free during Beta. No credit card. Two minutes to set up.