Memex

Name: Memex
Rating: 4.2069 (58 reviews)
Author: WorldBrain.io

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

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Features & Capabilities

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.

User Growth & Download Statistics

Add-on

By:

Daily users:

Rating:

Version:

3.20.9 Last updated: 2024-08-08

Version code:

5789268

Creation date:

2017-04-08

Risk:

Permissions:

Content scripts matches:

<all_urls>

Size:

8.82MB

Email:

su*****@memex.social

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 8,988 ▼ 21

Other rankings

#326 in Bookmarks ▲ 1#20 in meme keyword 10 #27 in member keyword 10 ▼ 1#41 in deactivate keyword 11 ▼ 1#249 in remember keyword 16 ▼ 2

Other platforms

Memex (v3.20.14)

10,000 3.76

(109)

Memex Go (v1.13.30)

8,030 3.40

(59)

For Developers

Monetize with App Pass Boost with Extension Booster

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

WorldBrain.io

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/worldbrain/

Email:

su*****@memex.social

Website:

https://memex.social

Permission Change History

2023-09-20: Version 3.5.5 → 3.5.10

Add Permissions: clipboardWrite

2023-03-09: Version 3.2.27 → 3.3.16

Remove Permissions: idle history webRequest webRequestBlocking

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

You can't force shortcuts in 2026, i need my ctrl+____

by Fi*****, 2026-03-06

by Fi*****, 2026-02-15

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

View all user reviews ›

Is Memex Safe?

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.
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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 Add-ons Store, 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 has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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