The AppImage format is a format for packaging applications in a way that allows them to run on a variety of different target systems (base operating systems, distributions) without further modification.
Using the AppImage format you can package desktop applications as AppImages that run on common Linux-based operating systems, such as RHEL, CentOS, Ubuntu, Fedora, Debian and derivatives.
Copyright (c) 2004-24 Simon Peter [email protected] and contributors.
https://en.wikipedia.org/wiki/AppImage
Providing an AppImage for distributing application has, among others, these advantages:
- Applications packaged as an AppImage can run on many distributions (including Debian, Ubuntu, Fedora, openSUSE, Linux Mint, and others)
- One app = one file = super simple for users: just download one AppImage file, make it executable, and run
- No unpacking or installation necessary
- No root needed
- No system libraries changed
- Works out of the box, no installation of runtimes needed
- Optional desktop integration with appimaged
- Optional binary delta updates, e.g., for continuous builds (only download the binary diff) using AppImageUpdate
- Can optionally GPG2-sign your AppImages (inside the file)
- Works on Live ISOs
- Can use the same AppImages when dual-booting multiple distributions
- Can be listed in the AppImageHub central directory of available AppImages
- Can double as a self-extracting compressed archive with the
--appimage-extractparameter
Here is an overview of projects that are distributing AppImages.
If you have questions, AppImage developers are on #AppImage on irc.libera.chat.
Running an AppImage mounts the filesystem image and transparently runs the contained application. So the usage of an AppImage normally should equal the usage of the application contained in it. However, there is special functionality, as described here. If an AppImage you have received does not support these options, ask the author of the AppImage to recreate it using the latest tooling).