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CoreOS Clair vs Tenable Cloud Security 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
Tenable Cloud Security
Ranking in Container Security
24th
Average Rating
8.4
Reviews Sentiment
6.7
Number of Reviews
11
Ranking in other categories
Identity and Access Management as a Service (IDaaS) (IAMaaS) (11th), Cloud Workload Protection Platforms (CWPP) (12th), Cloud Security Posture Management (CSPM) (19th), Cloud-Native Application Protection Platforms (CNAPP) (14th), Cloud Infrastructure Entitlement Management (CIEM) (4th)
 

Mindshare comparison

As of August 2025, in the Container Security category, the mindshare of CoreOS Clair is 0.5%, up from 0.4% compared to the previous year. The mindshare of Tenable Cloud Security is 1.4%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security
 

Featured Reviews

Felipe Giffu - PeerSpot reviewer
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.
Antonio Scola - PeerSpot reviewer
Offers reliable security support and encourages a safe migration to cloud environments while there is room for better reseller collaboration
I really don't know to tell the truth because we sell many solutions and don't sell exclusively Tenable, so I'm not in a condition to give a precise definition of what could be improved. My perception is this: when customer A needs Tenable Cloud Security, we introduce and demonstrate it. They POC, they appreciate it. The solution serves in such use cases ABC. I am very pragmatic and straightforward - as long as they use or want the solution, I am interested. If they don't, my question is what are the main objections? They may discuss pricing, or they may say they thought the solution had certain technical capabilities that they could not find.

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."
"Tenable Cloud Security excels in vulnerability detection, one of its strongest features. Another valuable feature is software composition analysis, which highlights and automates the detection of security flaws. Additionally, their knowledge base is excellent; if anything goes wrong, they provide clear guidance on what needs to be done to address specific vulnerabilities."
"Ermetic can provide super visibility for our cloud environment (we are using AWS)."
"Scanning and reporting are the most valuable features of Tenable Cloud Security"
"The analytical and reporting capabilities are pretty straightforward and show every transaction and major attempt to attack the application in the cloud."
"The key benefit lies in having the largest and most up-to-date database. When it comes to using any Tenable product, it excels in finding vulnerabilities and providing analytics."
"The product's visibility and remediation work fine for me."
"The product's deployment phase is easy."
"If you have multi-cloud tenancy using AWS and Azure, you can have a single dashboard where you can onboard all the cloud infrastructure and have visibility into it."
 

Cons

"An area for improvement is that CoreOS Clair doesn't provide information about the location of vulnerabilities it detects."
"It can be improved in its support response. They usually take up to seven days to resolve the issue."
"There is a need for the support team to improve their response time since it is one of the areas where the product's technical team has certain shortcomings."
"I do think there might be room for more integrations. This could allow for further customization and flexibility, essentially offering different functionality options to accommodate various budgets."
"Due to its robust nature, the platform's adoption can be overwhelming initially. However, once organizations start using it, they tend to get used to it. I haven't had much direct interaction with the support team, but some partners have reported a desire for better support for the product."
"Tenable needs to offer a patch-based solution since it is an area where the tool lacks a bit."
"I have faced several bug incidents with the solution"
"Ermetic needs to improve its security scanning. I would like to see more dynamic graphical forms."
"In my experience, Tenable Cloud Security is not very stable."
"If Tenable Cloud Security offers a complete Cnapp solution with CWP, CIEM, and Waap security, it will be able to compete with other competitors."
 

Pricing and Cost Advice

"CoreOS Clair is open-source and free of charge."
"The tool's price is good compared to other brands. The tool's subscription is for a year."
"There is a need to opt for a subscription-based pricing model to use Tenable Cloud Security. I rate the product price an eight on a scale of one to ten, where one is low price and ten is high price."
"The tool's pricing is fair."
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Top Industries

By visitors reading reviews
Manufacturing Company
14%
Financial Services Firm
14%
Computer Software Company
11%
Performing Arts
9%
Computer Software Company
14%
Government
11%
Financial Services Firm
10%
Manufacturing Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

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 do you like most about Tenable Cloud Security?
The solution’s vulnerability management feature has helped us identify and mitigate risks well.
What needs improvement with Tenable Cloud Security?
I think Tenable Cloud Security could be improved with more clear licensing. What I would like to see improved with licensing is how they're used in the product. The calculations of what is consider...
What is your primary use case for Tenable Cloud Security?
My main use case for Tenable Cloud Security is managing our security compliance and security posture. I use Tenable Cloud Security for managing compliance and security posture, and we rely on the c...
 

Also Known As

No data available
Ermetic, Ermetic Identity Governance for AWS
 

Overview

 

Sample Customers

eBay, Veritas, Verizon, SalesForce
Tyler Technologies, Bilfinger, BarkBox, MongoDB, airSlate, Adama, Latch, Cloudinary, Riskified, AppsFlyer, IntelyCare, Aidoc, 42Dot, and more.
Find out what your peers are saying about CoreOS Clair vs. Tenable Cloud Security and other solutions. Updated: August 2025.
865,295 professionals have used our research since 2012.