Tecadmin published a beginners guide about how to use AppImage on Linux.
How to Use AppImage on Linux (Beginner Guide)
The Linux system uses a package manager tool with central repositories like Apt, Yum etc. Which is the traditional way for the applications installation on any Linux system. Some of the application comes with extension .appimage. It may be, you are not much aware about these files.
How to Use AppImage on Linux (Beginner Guide) – TecAdmin