Why it's a strong pick

Floccus keeps your real browser bookmarks in step across browsers and devices, and it does not host them for you. You pick where they sync. It is open source under MPL-2.0, and its code is public on GitHub. It uses Manifest V3, Chrome's current extension format. Its latest release came in September 2026.

What it does

Floccus syncs the bookmarks already in your browser. You set up a sync profile, point it at a backend, and Floccus keeps both sides matching. The README says it syncs bookmarks privately across browsers and devices. It works in Firefox, Chrome, Edge, Opera, Brave and Vivaldi, and there is a mobile app for Android and iOS.

Key features

Native bookmarks. It syncs the bookmarks your browser already has.
Many backends. Nextcloud Bookmarks, Linkwarden, KaraKeep, Google Drive, Dropbox, Git servers and WebDAV.
Many browsers. Firefox, Chrome, Edge, Opera, Brave and Vivaldi.
Sync control. Use one-way or two-way sync, set intervals and pick folders.
Several profiles. Run more than one sync profile at once.
Config export. Save your settings.

Who it's for

Floccus is for people who want their bookmarks in more than one browser and want to choose where the data lives. It suits self-hosters, and anyone who already has Nextcloud, WebDAV or a cloud drive. It is free to install. If you want a ready-made service with nothing to set up, it is not the simplest choice.

What permissions does Floccus ask for?

Its manifest asks for alarms, bookmarks, storage, unlimitedStorage, tabs and identity. It also lists history as optional, and it asks for access to all sites. Bookmarks access is the core of the job, since Floccus reads and writes your bookmarks. Read the install prompt before you add it.

Does Floccus see my bookmarks?

Its privacy policy says neither the authors of Floccus nor the publisher receive the data you provide. It says a debug log stays on your device and only you can share it. The sync service you choose will see your bookmarks. The policy is dated 2018-09-28.

Do I need my own server or cloud account?

Yes. Floccus does not host bookmarks. It needs a backend you set up, such as Nextcloud, WebDAV, a Git server, Google Drive or Dropbox. Your bookmarks are only as safe as that backend. Those services may have their own costs, which we did not check.

Does it work on my phone?

Floccus has a mobile app for Android and iOS, per the README. Check that your chosen backend works with the app before you rely on it. The app is separate from the Chrome extension, so installing the extension on your computer does not put anything on your phone. Install the app there too.

FAQ

Is Floccus free? The extension is free. The README lists ways to donate. Your backend may cost money.

Which browsers does it support? Firefox, Chrome, Edge, Opera, Brave and Vivaldi.

Can it sync with Linkwarden or Karakeep? Yes. Both are on the README's list of backends.

Good to know

Start with one-way sync from a test profile, and check the result before you switch to two-way. Floccus lets you pick folders, so try one small folder first. Keep a bookmark export somewhere safe, because your backend holds the only synced copy.

Other bookmark managers to compare

Floccus is one of 6 picks in our bookmark managers guide:

Linkwarden: save links to your Linkwarden collections.
Karakeep: save links to your Karakeep app.
linkding Extension: Saves the current tab to your own linkding server and searches your bookmarks from the address bar. Open source.
Wallabagger: save pages to your wallabag server.
ArchiveBox: send pages to your own ArchiveBox server to keep.