How to Install App Outlet on Linux With DEB or AppImage

You can install the legacy App Outlet app store on Linux from its archived GitHub releases as a Debian package or an AppImage. Before downloading it, know that App Outlet is discontinued: its newest listed release is v2.1.0, dated March 31, 2022, and its repository is read-only. The app may still launch, but its catalog or install actions may no longer work.

Check the project status before installing

App Outlet was designed as one place to discover Linux applications distributed as AppImages, Flatpaks, and Snaps. That description is historical. The project’s release notes say Snap support was removed in v2.0.3, and the separate App Outlet API repository that supplied catalog data is also archived. Do not use the old sudo snap install app-outlet instruction; it is obsolete.

For a maintained application store, use the software center supplied by your Linux distribution. If you specifically need App Outlet, download only from the official App Outlet releases page. The official repository identifies the project as discontinued. Avoid third-party mirrors and old one-click download endpoints.

Choose a release package

Open the releases page and check the release tag and available Linux assets. The last listed release is v2.1.0. Pick a .deb file if you use Ubuntu, Debian, Linux Mint, or another Debian-based distribution. Choose an .AppImage for many other desktop distributions. The release is old, so confirm that the asset matches your system’s processor architecture before downloading it.

Install the DEB package on Ubuntu or Debian

1. Download the DEB asset. On the release page, expand the asset list and save the Linux .deb package to your Downloads folder. Do not choose a source archive such as .zip or .tar.gz; those files are not installers.
2. Check the downloaded file. Open Files and select Downloads. Confirm that the package is present. If the release offers a different architecture from your computer, do not force the installation.

3. Install it with APT. Open a terminal in Downloads and enter the command below, replacing filename.deb with the exact name of the downloaded file. Keep the ./ before the name so APT treats it as a local package.

sudo apt install ./filename.deb

Enter your Linux password if prompted, review the package changes, and confirm only if the requested installation looks reasonable. APT can resolve dependencies from your configured repositories. When it finishes, search for App Outlet in your desktop’s application launcher and open it. This method is for Debian-based systems; Fedora and many other distributions cannot install a DEB directly.

Run App Outlet as an AppImage

An AppImage is a single executable file, so this option avoids installing a DEB system-wide. The AppImage project’s official running guide describes the same download, permission, and launch sequence.

1. Download the AppImage. From the same official release page, save the .AppImage asset in Downloads. Keep the original filename in mind; the examples below use AppOutlet.AppImage.

2. Allow it to run. In Files, right-click the AppImage, choose Properties, open Permissions, and enable Allow executing file as program if your desktop shows that option. Close the dialog after changing it.

If your file manager does not provide an executable permission option, use a terminal instead. In Downloads, run the command with the actual filename:

chmod u+x ./AppOutlet.AppImage

3. Launch the file. From the same terminal, run the AppImage. Replace the example name if the release asset has a different filename.

./AppOutlet.AppImage

You can also double-click the executable AppImage in Files if your desktop permits it. If Linux reports a missing FUSE component or another runtime error, consult the AppImage documentation for your distribution rather than downloading a library from an unknown site. Do not run the AppImage with sudo.

What to do if App Outlet opens but does not work

A successful installation only confirms that the desktop can start the old application. It does not restore App Outlet’s retired catalog service or provide current updates. If search results are blank, a download button fails, or an install action hangs, reinstalling the same release is unlikely to fix the underlying service. The App Outlet API repository is archived, so use your distribution’s software center or a package publisher’s official site to find and install software instead.

The project still publishes source code and an archived build guide, but those instructions use an old toolchain and are not a reliable workaround for a broken catalog. If you are evaluating a source build, read the maintainer’s build notes and verify the dependencies and code yourself before proceeding.