# OpenSync

> Watch videos together - Sync playback across devices. Supports Youtube, Netflix, Hotstar and Prime Video.

Canonical page: [https://chrome-stats.com/d/opensync?hl=ja](https://chrome-stats.com/d/opensync?hl=ja)

## Overview

- **ID:** `opensync`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Ishan
- **Category:** photos-music-videos,social-communication,games-entertainment
- **Daily users:** 1
- **Version:** 1.2.6
- **Last updated:** 2026-04-07
- **First published:** 2026-01-22
- **Size:** 67 KB
- **Data as of:** 2026-09-16
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/opensync/)

## Rankings

- #105,153 — Overall
- #226 — sync

## Permissions and access

### Permissions

- `tabs`
- `storage`
- `alarms`
- `activeTab`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- 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).

## Similar extensions and apps

- [Sync Watch](https://chrome-stats.com/d/sync-watch) — 1 users
- [SyncUp](https://chrome-stats.com/d/syncup) — 184 users
- [CineSync — Watch Together](https://chrome-stats.com/d/cinesync-watch-together) — 2 users
- [SyncClick](https://chrome-stats.com/d/syncclick) — 1 users
- [KoalaSync](https://chrome-stats.com/d/koalasync) — 129 users, 5.00 / 5
- [VideoSync](https://chrome-stats.com/d/videosync) — 5 users
- [Synctastic](https://chrome-stats.com/d/synctastic) — 5.00 / 5
- [Stream Together](https://chrome-stats.com/d/stream-together) — 126 users, 4.20 / 5
- [YouTube Sync](https://chrome-stats.com/d/youtube-sync) — 9 users, 5.00 / 5
- [Sync Everything](https://chrome-stats.com/d/sync-everything) — 7 users
- [What to Watch Sync](https://chrome-stats.com/d/what-to-watch-sync)
- [Sync](https://chrome-stats.com/d/sync_ext) — 12 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/opensync?hl=ja)