When comparing CoreOS Container Linux vs openSUSE Tumbleweed, the Slant community recommends CoreOS Container Linux for most people. In the question“What are the best Linux distributions for servers?” CoreOS Container Linux is ranked 3rd while openSUSE Tumbleweed is ranked 14th. The most important reason people chose CoreOS Container Linux is:
Docker comes out of the box.
Specs
Ranked in these QuestionsQuestion Ranking
Pros
Pro Docker pre-installed
Docker comes out of the box.
Pro Automatic updates
Automatic updates means better security and reliability.

Pro Built on systemd
Uses unit files for managing all services and journald for logging.

Pro Great documentation
Has guides for installing systems like Kubernetes, setting up etcd, and using cloud-config to manage hosts.
Pro Very lightweight, smaller attack surface
The OS is tiny and has a much smaller attack surface compared to other distributions.
Pro Stable
Tumbleweed is stable enough to use every day. Updates are OpenQA tested to ensure stability before being released for Tumbleweed. Bleeding edge untested software can be tried using OpenSUSE factory.
Pro Easy installation and cutting edge apps
Pro Tumbleweed + OpenSUSE Build Service
Pro Good selection of preinstalled applications
Pro A large amount of software
Pro User friendly + Good support
Active and friendly user community, updates come fast
Cons
Con End of Life May 26, 2020
Fedora CoreOS is the official successor.
Con EOL
May 26, 2020, CoreOS Container Linux .
Con No package manager
CoreOS has only the minimum for being a host. It doesn't even have a package manager. Alternatively you can start a container with any software you need.
Con Complex multimedia codecs and plugins installation
Con Little / no third-party support
Like it or not, most third parties don't want to deal with less-popular distros. So most of them only support Ubuntu LTS and those versions of RHEL/CentOS that are still supported.
Con Slow and painful unfortunately, especially compared to other modern distros
Con "Online Update" update in YaST control center only works in openSUSE Leap.
Con Packman repository has to be added to have good software support.
For me, not really a con
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