Memex

Remember Everything You Read Online. An open-source and privacy focused extension to Full-Text Search, Annotate and Organise your Web-Research

Easily annotate, organise and share your online research. Across Devices. Watch a 4min speed run: https://worldbrain.io/speed-run

FEATURES:

🔍 Full-text search pages and PDFs you annotated or bookmarked. 📝 Highlight and Annotate Websites & PDFs 🗄 Flexible organisation: Tag & Sort pages into collections + tab manager 🌎 Share, collaborate on and discuss collections of pages and notes with others. 🔗 Link to highlights and annotations
📱 Across devices: Save, View & organise your knowledge on all of your devices, phones and tablets. ⚡️ Quick onboarding. No signup necessary. Import from every major bookmarking service 😎 Offline-first. All data is stored on your device. Full Privacy & Open-Source ⛅ Backup your data to any of your favourite cloud providers

View our privacy policy: https://links.memex.social/privacy

HOW TO USE

🔍 Search: Type in 'm' followed by pressing the 'space' bar or tab in the address bar. 📝 Annotate: Highlight any piece of text and right click 🗄Organise: Move with the mouse to the right side of the screen, or click on the little 'brain' icon in the extension bar

FEEDBACK and TROUBLESHOOTING

To leave bug reports and feature requests: community.memex.social Support email: support@memex.social Chat with the team: memex.social > the chat bubble in the bottom right corner

If Memex causes issues, there is this trick as old as computer service people are around: Have you tried restarting the extension? 🤓 You can do so via chrome://extensions.

If a problem persists, keep the extension deactivated and drop by in our help section (above). When deactivated then does not need RAM or CPU.

Manifest V2 Add-on
By:
WorldBrain.io
Daily users:
267 6
Rating:
4.23
(56)
Version:
3.20.9 Last updated: 2024-08-08
Version code:
5789268
Creation date:
2017-04-08
Risk:
Very high risk impact Moderate risk likelihood
Permissions:
  • <all_urls>
  • alarms
  • bookmarks
  • contextMenus
  • tabs
  • webNavigation
  • notifications
  • unlimitedStorage
  • storage
  • clipboardWrite
Size:
8.82MB
Email:
su*****@memex.social
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Browser Add-ons
Data ingested on:
2025-07-14

Other platforms

Memex (v3.20.14)
10,000 3.81 (107)
Memex Go (v1.13.30)
7,766 3.40 (59)

User reviews

Pros
  • Great for research
  • Data stored on own device or cloud service
  • Excitement for continued development
Cons
  • Not truly open-source
  • Has bugs and annoying issues
  • Requires account creation and paid membership for full features
Recent reviews
Totally complicated and it is not user friendly. Gave up. You cannot delete your account yourself but need to write to them.
by Fi*****, 2025-05-24

by 天灭*****, 2025-04-02

by 退出*****, 2025-03-03
View all user reviews ›

Extension safety

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Memex requires a lot of sensitive permissions. Exercise caution before installing.

Risk impact analysis details
  • Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
  • Critical ****** ****** ** ******* ***** ***** *** ** **** ** ***** **** ******** ****** *** ******** ********** * ******* ********
  • High ****** ********* ** * ****** ******** ******** ********** * ******* ******* *****
  • High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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  • Medium ******* ******* ************* ***** *** ** ******* *** **** ******* ****** ******** *******
  • Low ****** ***** ** ******* ****** ********** **** ** ** ******** ******* ** **** ***** *************
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Memex is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

Risk likelihood analysis details
  • High This extension has low user count. Unpopular extensions may not be stable or safe.
  • Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
  • Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
  • Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details

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