"Now, imagine using an operating system that guarantees that upgrades will either 100% succeed or not happen at all. That's what an atomic distribution is. When an update is made available, it happens in the background, in an isolated location (so it doesn't affect you or the OS). If the upgrade succeeds, it will be applied the next time you reboot. If the upgrade fails, it's scrapped."
"Vanilla OS is impressive. Even beyond its atomicity (and immutability), Vanilla OS has plenty to offer. During the installation, you get to make some customizations, such as which office suite and web browser to install. I look at Vanilla OS as a "frankenlinux" because it uses a unique package manager (Apx), which allows you to install software from various sources. Those apps are installed within containers, so they cannot access the root file system, which adds an extra layer of security to the system."
Atomic distributions apply updates in the background to an isolated image and ensure upgrades either fully succeed on reboot or are discarded if they fail. Some atomic distros combine atomic updates with immutability for additional security. Containerized application installations prevent apps from accessing the root filesystem, reducing attack surface. Vanilla OS pairs atomic and immutable design with a unique package manager (Apx) that installs apps from multiple sources and supports Flatpak, AppImage, Android apps, and Wine. Atomic and immutable distros aim to prevent failed upgrades, protect user data, and simplify reliable system updates. All listed operating systems are free to download.
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