floccus

Name: floccus
Rating: 4.4599 (237 reviews)
Author: Marcel Klehr

By: Marcel Klehr

Securely synchronize bookmarks across Chrome, Firefox, Edge, and more using your own cloud storage.

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Features & Capabilities

floccus Bookmarks Sync — Private, Cross‑Browser & Device Sync

floccus lets you securely synchronize bookmarks across Chrome, Firefox, Edge and any browser that supports extensions, using your own cloud storage. Choose Nextcloud, WebDAV, Google Drive, Git or other backends and keep full control of your data — floccus never stores your bookmarks on its servers. Optional end‑to‑end encryption is available for WebDAV and Google Drive backends.

Open‑source and community driven, floccus is free of ads and subscriptions. A simple setup wizard guides you through backend selection and configuration, offering instant, cross‑device sync on desktops, tablets and mobile. Contribute on GitHub or support the project to help keep your bookmarks private and in sync.

User Growth & Download Statistics

Add-on Privacy & Security Open Source Developer Tools

By:

Daily users:

Rating:

Version:

5.9.1 Last updated: 2026-04-10

Version code:

6215346

Creation date:

2016-06-05

Risk:

Permissions:

Size:

14.43MB

Email:

mk*****@gmx.net

URLs:

Website ,Privacy policy

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-03

Compare stats and ranking:

Ranking

# 831 ▲ 11

Other rankings

#21 in Bookmarks

#57 in Tabs

#181 in Privacy & Security

#127 in setup keyword 32 ▼ 1

#150 in drive keyword 31 ▲ 1

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Other platforms

floccus bookmarks sync (v5.9.1)

100,000 4.34

(278)

floccus bookmark sync (v5.9.1)

20,453 3.68

(254)

floccus bookmarks sync (v5.9.1)

28,381 4.30

(52)

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:

Marcel Klehr

Firefox Add-ons Store

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

Email:

mk*****@gmx.net

Website:

https://floccus.org

Permission Change History

2025-08-02: Version 5.5.6 → 5.6.0

Add Permissions: tabGroups

2024-06-15: Version 5.2.0.3 → 5.2.1

Remove Permissions: history

Add Optional permissions: history

2024-06-12: Version 5.1.4.2 → 5.2.0.3

Add Permissions: history

2024-01-07: Version 5.0.7 → 5.0.8

Add Permissions: *://*/*

Remove Permissions: https://*/ http://*/

2023-12-31: Version 5.0.5 → 5.0.6

Remove Host permissions: *://*/*

Add Permissions: https://*/ http://*/

2023-12-09: Version 4.19.1 → 5.0.2

Add Host permissions: *://*/*

Remove Permissions: https://*/ http://*/

User Reviews

Reviews highlight Floccus for reliable cross-device/browser syncing, ease of use, and strong Nextcloud integration, with broad browser support and free core syncing. Common drawbacks involve limited Firefox mobile support and potential cross-browser duplicates that may require deduplication. Overall, a solid multi-platform solution with room for mobile improvements and better duplicate handling.

Pros

Seamless cross-device and cross-browser bookmark syncing across multiple browsers and operating systems.
Easy to use and intuitive.
Strong Nextcloud integration for hosting and syncing bookmarks.
Works across many browsers with solid multi-browser support.
Core syncing is free to use (no mandatory payment to sync).

Cons

Mobile Firefox support is limited: there is no dedicated Firefox mobile extension, so syncing relies on the mobile app.
Bookmarks can duplicate across browsers and may require manual deduplication.

Recent reviews

by Fi*****, 2026-06-02

This extension is brilliant. It integrates perfectly into Firefox's native bookmark structure and keeps everything updated using Google Drive as the backend. Setting up the authorization takes seconds, and after that, it just works seamlessly in the background. It’s rock-solid, doesn't hog resources, and is the perfect solution for keeping bookmarks synced across different profiles.

by vi*****, 2026-06-02

by ak*****, 2026-05-18

View all user reviews ›

Is floccus 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.

floccus requires some sensitive permissions that could impact your browser and data security. 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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Medium ****** ** ********* *** ******* ******** **** **** *********** *** ********* *** ********* ******* *** *****

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.

floccus 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.
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Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
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