Debian
6.0#8 in server operating systemFree planFree planLinuxSelf-hosted
VisitDebian suits users seeking a free operating system for personal computers or cloud virtual machines. Its range of architectures and deployment options also covers scientific, academic, public-sector, and other settings.
OmniOS suits administrators managing x86-64 servers or virtual machines who need ZFS, containers, virtualization, and signed package updates. It is also relevant to deployments using physical hosts, AWS EC2 images, or virtual machines.