Try our new research platform with insights from 80,000+ expert users

CoreOS Clair vs SUSE Rancher comparison

 

Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

CoreOS Clair
Ranking in Container Security
29th
Average Rating
8.6
Reviews Sentiment
7.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
SUSE Rancher
Ranking in Container Security
33rd
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
6
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of January 2026, in the Container Security category, the mindshare of CoreOS Clair is 0.7%, up from 0.4% compared to the previous year. The mindshare of SUSE Rancher is 0.5%, up from 0.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Market Share Distribution
ProductMarket Share (%)
CoreOS Clair0.7%
SUSE Rancher0.5%
Other98.8%
Container Security
 

Featured Reviews

Felipe Giffu - PeerSpot reviewer
Red Hat Solution Architect at Seprol Computadores e Sistemas
An operational system, similar to Linux where you can run your applications inside containers
With CoreOS, you can run your applications inside containers. For example, if you have an application that needs to run on Linux, you can create and install a container. However, it's important to note that you don't install CoreOS inside a container; CoreOS is the host operating system that manages containers. When you mentioned using Nacula as part of your CI/CD pipeline, it means your application is deployed and managed automatically through the CI/CD process. Containers are used to deploy your application within this pipeline, but CoreOS does not run inside these containers. Instead, CoreOS is the base operating system that supports and manages these containers.
reviewer2785698 - PeerSpot reviewer
Technical Solutions Engineer at a leisure / travel company with 501-1,000 employees
Centralized management has unified multi‑cluster operations across clouds and data centers
There are multiple areas where SUSE Rancher can improve. The most pressing issue that I found in SUSE Rancher is that it is a bit slow. Compared with Komodor, it is very slow. Maintenance is also very high, and we require regular maintenance. Non-experts in Kubernetes cannot handle this application. It is a bit less stable compared with other tools in the market. In most regions, there is scope for improvement. There is a lot of scope for improvement, and there are a lot of issues in the tool, such as addressing the errors, addressing the stability, and addressing the reliability. It is a very good tool, so that is why I gave it a nine. However, it is not a great tool to get a ten. It is a bit costly compared with other tools in the market.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"CoreOS Clair's best feature is detection accuracy."
"With CoreOS, you can run your applications inside containers. For example, if you have an application that needs to run on Linux, you can create and install a container. However, it's important to note that you don't install CoreOS inside a container; CoreOS is the host operating system that manages containers."
"SUSE Rancher is best used for large-scale applications such as ours; it manages very high-end infrastructure, has very good customer support, and is very easy to understand in terms of usage."
"SUSE Rancher has made things easier for my team and organization by reducing errors, as I use it every day of the week, and it shows us issues through dashboards."
"SUSE Rancher has positively impacted my organization with increased efficiency in a 10x manner."
"Rancher Desktop provides support for Kubernetes setup on local machines."
"Rancher Desktop provides support for Kubernetes setup on local machines."
"SUSE Rancher is best used for large-scale applications such as ours; it manages very high-end infrastructure, and it has very good customer support, and it is very easy to understand in terms of usage."
"SUSE Rancher has positively impacted my organization as productivity is the main point, and the productivity has improved because the main project goal was to finish the project faster, which was particularly important since we have many applications."
"The most valuable features of SUSE Rancher include the user interface and the display features."
 

Cons

"It can be improved in its support response. They usually take up to seven days to resolve the issue."
"An area for improvement is that CoreOS Clair doesn't provide information about the location of vulnerabilities it detects."
"There are a lot of issues in the tool, such as addressing the errors, addressing the stability, and addressing the reliability."
"Some initial setup and configuration were required by the admin side for enabling security policies, which were not supported initially."
"I have noticed that SUSE Rancher's GUI is slow because we have more than 1,000 pods, and when searching for a pod name, the page takes some time to load."
"Some initial setup and configuration were required by the admin side for enabling security policies, which were not supported initially."
"I wish the container could be more lightweight so that anyone can test and verify SUSE Rancher Prime."
"There are a lot of issues in the tool, such as addressing the errors, addressing the stability, and addressing the reliability."
"Additional features for a paid solution should be included, such as more detailed insights, better graphics, and an improved user interface."
 

Pricing and Cost Advice

"CoreOS Clair is open-source and free of charge."
Information not available
report
Use our free recommendation engine to learn which Container Security solutions are best for your needs.
881,114 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
14%
Performing Arts
14%
Manufacturing Company
12%
Comms Service Provider
8%
Outsourcing Company
19%
Manufacturing Company
11%
Financial Services Firm
9%
University
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise1
Large Enterprise4
 

Questions from the Community

What is your experience regarding pricing and costs for CoreOS Clair?
If you work with CoreOS or OpenShift, you don't need to pay for CoreOS separately. When you pay for OpenShift, you get CoreOS included, so you don't need to pay for the operating system separately....
What needs improvement with CoreOS Clair?
It can be improved in its support response. They usually take up to seven days to resolve the issue.
What is your primary use case for CoreOS Clair?
We use the tool to manage and secure the event file system. CoreOS Clair is an operational system that is very similar to Linux and offers benefits to other Linux operating systems. One major advan...
What is your experience regarding pricing and costs for SUSE Rancher?
I do not know about the pricing, setup cost, and licensing information because another segment is responsible for this.
What needs improvement with SUSE Rancher?
I think SUSE Rancher can be improved, particularly because SUSE Manager, SUSE Rancher Manager, or SUSE Rancher Prime runs on containers. I wish the container could be more lightweight so that anyon...
What is your primary use case for SUSE Rancher?
My main use case for SUSE Rancher is managing multi-clusters, such as Kubernetes platform-based Kubernetes, GKE, AKS, and EKS. That was the main purpose. For managing those clusters with SUSE Ranch...
 

Overview

 

Sample Customers

eBay, Veritas, Verizon, SalesForce
Information Not Available
Find out what your peers are saying about CoreOS Clair vs. SUSE Rancher and other solutions. Updated: December 2025.
881,114 professionals have used our research since 2012.