AppImageKit
Package desktop applications as AppImages that run on common Linux
...Just download the application, make it executable, and run! No need to install. Runs on most 64-bit Linux desktops. Many upstream projects like Krita, Subsurface, MuseScore, KDevelop, and digiKam have started to provide AppImages directly on their download pages. More AppImages for other applications like Atom, Arduino, Blender, Chromium, Firefox, etc.