# xBrowserSync

> Browser syncing as it should be: secure, anonymous and free! Sync bookmarks across your browsers and devices, no sign up required.

Canonical page: [https://chrome-stats.com/d/xbs](https://chrome-stats.com/d/xbs)

## Overview

- **ID:** `xbs`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** xBrowserSync
- **Category:** privacy-security,bookmarks
- **Daily users:** 2,479
- **Weekly downloads:** 50
- **Rating:** 4.04 / 5 (91 ratings)
- **Version:** 1.5.2
- **Last updated:** 2021-12-28
- **First published:** 2018-10-02
- **Size:** 1.88 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/xbs/)
- **Website:** [https://github.com/xbrowsersync/app/issues](https://github.com/xbrowsersync/app/issues)
- **Privacy policy:** [https://addons.mozilla.org/firefox/addon/xbs/privacy/](https://addons.mozilla.org/firefox/addon/xbs/privacy/)

## Description

xBrowserSync is a free and open-source browser extension designed to sync bookmarks securely and anonymously across desktop browsers and Android devices. It ensures complete privacy by encrypting data client-side using military-grade encryption and requires no sign-up or collection of personal data. Users can enrich bookmarks with descriptions and tags, navigate easily through an intuitive search interface, and benefit from native browser bookmark support. The Android app enables mobile access and bookmark sharing from various apps.

For those seeking ultimate privacy, xBrowserSync offers the option to run a personal cloud service on Linux or Windows servers. Additional features include backup and restore functionality and seamless integration with native browser bookmark hierarchies, making it a robust, user-friendly syncing solution that prioritizes security and anonymity.

## Rankings

- #1,931 — Overall
- #57 — Bookmarks
- #351 — Privacy & Security
- #7 — sync
- #13 — chrome browser
- #17 — browser

## Permissions and access

### Permissions

- `activeTab`
- `alarms`
- `bookmarks`
- `http://*/`
- `https://*/`
- `notifications`
- `storage`
- `tabs`
- `unlimitedStorage`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users praise xBrowserSync for easy, cross‑browser bookmark syncing, privacy emphasis, and multi‑device availability. However, multiple reviewers report serious reliability issues (bookmarks reordered/lost or overwritten), conflicts with native browser sync, performance problems, and concern that the project appears unmaintained. These strengths and risks are the most frequently mentioned points.

### Pros

- Cross‑browser bookmark syncing between Firefox and Chrome (multi‑device support).
- Easy to install/use — many users call it user‑friendly and straightforward to set up.
- Privacy‑focused: marketed and appreciated for secure, anonymous syncing.
- Has multi‑platform availability (browser extensions and a mobile app reported).

### Cons

- Appears unmaintained or infrequently updated (users note last update years ago).
- Reliability bugs — several reports of sync failures that reorder, overwrite, or corrupt bookmarks and require backups/restores.
- Conflicts with native browser sync (users often must disable built‑in sync to avoid problems).
- Performance problems and occasional errors (slowdowns, browser unresponsiveness, platform‑specific errors).

## Similar extensions and apps

- [XBrowser Bookmark Sync](https://chrome-stats.com/d/xbrowser-bookmark-sync) — 21 users, 4.00 / 5
- [Bookmarks Sync - Sync & Backup bookmarks](https://chrome-stats.com/d/bookmarks_sync) — 15 users
- [BrowSync](https://chrome-stats.com/d/brow-sync) — 5 users, 5.00 / 5
- [SyncMark - Your bookmark sync](https://chrome-stats.com/d/syncmark-your-bookmark-sync)
- [KeepSync](https://chrome-stats.com/d/keepsync) — 5 users
- [Hermes Sync](https://chrome-stats.com/d/hermes-sync) — 1 users
- [Nextcloud Bookmark Sync](https://chrome-stats.com/d/nextcloud-bookmark-sync) — 37 users, 3.00 / 5
- [SyncDesk](https://chrome-stats.com/d/syncdesk)
- [Bookmark Sync](https://chrome-stats.com/d/bookmark-synchronizing)
- [AIO Bookmark Sync](https://chrome-stats.com/d/aio-bookmark-sync)
- [SyncMarks](https://chrome-stats.com/d/syncmarks) — 56 users, 2.75 / 5
- [Universal Favorites](https://chrome-stats.com/d/universal-favorites) — 4 users, 4.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/xbs)