No more

to find websites again

A free & privacy-focussed browser extension to instantly find websites again - without bookmarking them.

No Sign-up.  No Credit Card.  Full Privacy. You Own Your Data.

What Users Say


Search every word of every website you visited or bookmarked

Remember that one article with the words "climate change" in the text?

Search with what you remember from the address bar of the browser.

Organise & filter by time, domain, tags and bookmarks

Search just like your brain remembers the page you are looking for.

"That article I visited two weeks ago on about decentralization"

"That tab I just closed on"

Highlight and share a link to any piece of text on the web

No need for tedious copy-pasting of quotes and urls again. 1 click and you're done.

Additional Features

Exclude terms or domains from results

Perform Google-like queries:


Import your existing browsing history/bookmarks

Dig deeper into the past. You can optionally import your existing browsing history and bookmarks.

In any case, Memex stays in sync with the bookmarks you make in your browser.

Blacklist URLs and Domains

Prevent websites from being indexed, by simply blacklisting them.

Easy Indexing Preferences

Don’t want to index everything?
No problem. Add a visit timer, only index title and URL by default, or only allow bookmarked/tagged/highlighted pages to be indexed. 

Pause Indexing

Need to go incognito?
No problem. You can pause Memex whenever you need.

Search PDFs

Find anything on any PDF you open in your browser.



Quickly add any information you need to remember about that article. 


Focus your commentary on pieces of the text. 

Save Social Posts

Save posts & comments on Facebook, Twitter & Reddit

Read it Later

Save websites to read them at a later time, also when offline. 

Which features would you like to see first?

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WorldBrain’s vision is a well-informed, less polarised society, that enjoys full data ownership and privacy.

We want to foster a mindset empowering people to make life's most important decisions with clarity and purpose.

So we built Memex, a bookmarking tool for great thinkers.
For those who are curious enough to keep an open mind and bold enough to admit they're wrong.


With Memex, we want to make it 10X+ faster for individuals to organise, recover and share the most useful and trustworthy content they find on the web.


Your personal data is fully stored locally on your device. We will never have access to it without your approval. 
To provide you with the Memex.Link services, the url and the highlight you want to send are stored on our servers. We do not store any personally identifiable information with it, like IP addresses of you or the people requesting it. 
We do however receive anonymized usage statistics about how people use the extension and its features. It will not contain any urls visited or terms searched, only interactions with the software itself. 

You can always opt-out and we respect the browser’s ‘do not track’ requests.
Find out more in our privacy policy

Our software is open-source so you can verify these claims yourself by looking at our source code.

Our business model does not depend on analysing and/or selling your data. 
We want to be profitable because we deliver real value to you and other users. 
This will happen through our premium features of Memex.Cloud, which will provide encrypted cloud backups, multi-device support and sharing of annotations and collections.

Per url visited it stores on average around 140kb. If you are a heavy web user with 30.000 visited documents you end up with about 4GB of data per year.
Our cloud plan allows you to send this to the cloud.

When browsing around, the extension needs around 80-130MB of Ram, which can go up to about 250-300 when you are using the search overview. Only when you import your existing browsing history and bookmarks, the CPU load will significantly increase and RAM can spike to around 500MB, because it needs to re-fetch all websites and index them in continuously. 

The only CPU spikes you’ll experience are small peaks when you import your history and bookmarks, or about 10 seconds after you visit a website, because of the resources needed to index pages.

Users with a modern setup should not experience any lag. Some low-spec machines may do, but we are constantly working on performance improvements.
With our upcoming premium service, you can also offload most of that work to the cloud.

We understand that for your work you don’t want to reference links that might disappear later. 

We are committed to make sure that the already created link will always be available, even if does not exist anymore. The costs of running this service are very low. 

We are also looking for appropriate partners to steward the public sharing server for these Memex.Links. 

If all else fails, each Memex.Link URL hast the full original URL in it, so that users can still reach the page linked to without problems.