• Find previously visited websites in seconds.

    A free browser extension to search for every word of every website & PDF you visited or bookmarked.
    Your data is truly yours because it stays on your computer.

Our Vision

A scalable & sustainable solution to online misinformation.

We do not want to define a single source of truth. Instead, we want to help you to know what the most trustworthy expert in any given topic think about the content you are reading, or what important background information they found in their own web-research.

Also, we want to enable you to easily compare what people from different filter bubbles think about the same content and simultaneously search through the most useful content they found.

To make this possible, we develop decentralized software that allows you to quickly find everything you have seen and created online and automatically share with others how you perceive the quality and relations between the content you process in your day-to-day web-research.

How we plan to get there

Stage 1: The Memex

A decentralized and open-source search engine for everything you have seen and created online.

Full-Text Search your browsing history, bookmarks and all your apps & search by associations:

“That article I posted to Facebook last year with the words “climate change” in the text.”

Watch a 60s Demo Video

…of the upcoming MVP release version.

Download for Chrome & Firefox

And get a real feeling for its use. You can use it up to 30k visited pages.

Stage 2: Automatically Create and Share Quality Ratings

Based on the combined interactions with content on all the services you use.

Voluntarily & Safely share ratings

No data ever leaves you without your prior approval. WorldBrain will never have access to your data by default.
Also, with an easy-to-use permission system, you will not share things accidentally.

Share as Groups (Value Systems)

Collectively broadcast quality ratings with people who share similar values. (e.g. a group of biologists)

Stage 3: Collaborative Web-Research

Follow friends, colleagues, and experts you trust in the topic you want to research.

Get quality ratings for websites and their content

…based on your network’s interactions with them.

Focus your search

Make web-searches only on pages your network found valuable, instead of the whole web, like with Google.

Get related background information

…based on what your network found after visiting the same content.
(e.g. a related paper or fact-checking article)

Get annotations and comments

…your network posted on other social networks.

Get diverse perspectives outside of your filter bubble

Follow (groups of) people with different worldviews and compare what they think about the same content or topic.



Click images to zoom in.

Impact on the Crypto & Decentralized Ecosystem

Getting the blockchain & decentralisation from a niche to the masses

WorldBrain has the potential of reaching millions of (non-technical) users with a broad demographic spectrum and various professional backgrounds e.g. students, journalists, corporate researchers, and scientists.
By putting decentralization, WordPress-like extensibility and interoperable, open APIs at the heart of our infrastructure, WorldBrain will offer a platform for blockchain-based and decentralized projects to reach mainstream adoption as well.

The future: The Chain of Trust (CoT)

Our questions: "Who is the right person to believe and to make decision in a given field, and why?"

The WorldBrain project does not aspire to define what is true.
Instead, we want to make transparent, who can be trusted with information and what processes they use to evaluate good content and quality experts, and to facilitate the knowledge transfer between many different value systems.

People can follow and endorse each other, thus lending credibility.
Groups of people (aka. value systems, filter bubbles) will have the ability to individually define what interactions approximate relevant content (e.g. a citation in a paper) and what metrics to use to evaluate the expertise of their group members (e.g. a degree or # of peer-reviewed publications).

Those transparent evaluations & interactions between value systems will iteratively reveal shared truths/facts between the different world-views and surface the most trusted experts in any given field.