Latest Version:
0.1.1 Updated:
5 months ago
Ready to install?
SideWatch is available to install from Firefox Add-ons Store and for download from this page.
7
Daily users
No ratings yet
0
Total downloads
Available versions
You can find the current and older versions of SideWatch here. You can download the archived versions or inspect their source codes.
As a free user, you can download up to 3 latest versions.
Upgrade to download older versions
| Version | Download | Size | Download count | Timestamp |
|---|---|---|---|---|
| 0.1.1 | XPI · ZIP · Source code | 231.28KB | 0 | 2026-01-17 |
| 0.1.0 | XPI · ZIP · Source code | 218.42KB | 0 | 2026-01-14 |
0.1.1 231.28KB
0.1.0 218.42KB
Install XPI file
An XPI file, short for "XPInstall," is a compressed file format used primarily by Mozilla applications, like Firefox and Thunderbird, to distribute and install add-ons or extensions. These files are similar in function to CRX files for Chrome but cater to the Mozilla ecosystem.
- Simply drag-and-drop the XPI into Firefox to install the add-on.
Install ZIP file
- Download the SideWatch ZIP file.
- In Firefox browser, go to
about:addonsto open Add-ons Manager - Click on ⚙, Install Add-on From File

- Select the SideWatch ZIP file from step 1. SideWatch is now installed on your browser.
Best SideWatch Alternatives
Here are some Firefox add-ons that are similar to SideWatch:
CineSync — Watch Together
Yen
Sync Watch
Schyler
CommentSync - Real-time YouTube Comments
motade
Watch Party Sync
Frederick Harrison
YouTube Comment Timeline Overlay
Cheswick
Synclify
Andrea De Masi
Sync Watch
Semro
Comment Overlay
Comment Overlay
FrameTogether
Bedir Ekim
Open Watch Party
Ruslan Zabarov