Add Messenger-Desktop-Client-Unofficial

[probonopd]

Repository: https://github.com/WinTer1165/Messenger-Desktop-Client-Unofficial

A secure, feature-rich unofficial desktop client for Facebook Messenger.

• Stars: 12
• Release with the AppImage: v2.1.0 (2026-07-31T10:45:19Z)
• AppImage asset: Messenger-Desktop-Unofficial-2.1.0-x86_64.AppImage
• License: MIT

Found by .github/workflows/discover-apps.yml, which looks for GitHub
repositories that publish AppImages but are not in the catalog yet. This
entry was not tested by a human; please review it before merging.

Possibly not from the application's authors: the repository name says "Unofficial" (label not-upstream). Please check whether the catalog should list this AppImage, or rather one from the application's own project.

[github-actions]

❌ Test failure

@WinTer1165: this pull request adds the AppImage from your GitHub repository to the AppImage catalog; the test reports the following. Could you have a look?

• The AppImage could not be mounted. AppImageHub currently supports only AppImages with a SquashFS file system; other formats such as DwarFS (used, e.g., by uruntime and quick-sharun) are not supported yet.

First error in the log:

ERROR: Could not mount the AppImage. AppImageHub currently supports only AppImages with a SquashFS file system

What next: once the AppImage is fixed (e.g. in a new release), comment /retest here to test it again. If it should not be in the catalog after all, close this pull request; an app that is already in the catalog can be removed by a maintainer with /remove.

Commit 1761065. Full log

[WinTer1165]

/retest

[github-actions]

✅ Test passed

Please check that the screenshot shows the application's main window.

Messenger-Desktop-Client-Unofficial

Compatibility: not self-contained: uses the C library of the system; uses an old AppImage runtime that needs the C library (and libfuse2) of the system; references glibc 2.25

Names:

WARNING: File name 'Messenger-Desktop-Client-Unofficial': does not match the name of the application in its desktop file ('Messenger Desktop (Unofficial)'); the file should be named after the application

Warnings:

• Please check the remarks about the names below.
• The AppImage contains no update information, so users cannot update it with AppImageUpdate or similar tools. Please consider embedding it when building the AppImage (e.g., appimagetool -u) and publishing the .zsync file next to the AppImage; see https://docs.appimage.org/packaging-guide/optional/updates.html

Commit 1761065. Full log

[WinTer1165]

Hi! I'm the developer of this app. It's an independent, open-source (MIT) desktop client for messenger.com, not a repackage of an official Meta app, so there's no upstream AppImage to point to instead. The AppImage is built and published by my own GitHub Actions release workflow.