k3OS has been discontinued. Similar apps include RancherOS, which is free and open source. Other options are Kairos Linux, Talos Linux, LinuxKit and kldload. In total there are five Linux Distros like k3OS for Linux and self-hosting.
A simplified Linux distribution built from containers, for containers. Everything in RancherOS is managed by Docker, with minimum software needed to run Docker.
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Kairos is a cloud-native meta-Linux distribution that runs on Kubernetes and brings the power of the public cloud to your on-premises environment. With Kairos, you can build your own cloud with complete control and no vendor lock-in.
Talos Linux is a modern Linux distribution built for Kubernetes.
4 distros, one USB, ZFS on root. Debian, Fedora, RHEL and Arch. Offline install, boot environments, WireGuard, eBPF. Free.
