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CoreOS Clair vs Tenable.io Container Security comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 16, 2024

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

Qualys TotalCloud
Sponsored
Ranking in Container Security
11th
Average Rating
8.6
Reviews Sentiment
7.3
Number of Reviews
39
Ranking in other categories
Vulnerability Management (11th), Cloud Workload Protection Platforms (CWPP) (8th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (1st), Cloud-Native Application Protection Platforms (CNAPP) (6th)
CoreOS Clair
Ranking in Container Security
32nd
Average Rating
8.6
Reviews Sentiment
7.6
Number of Reviews
2
Ranking in other categories
No ranking in other categories
Tenable.io Container Security
Ranking in Container Security
27th
Average Rating
8.0
Reviews Sentiment
6.1
Number of Reviews
9
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 2026, in the Container Security category, the mindshare of Qualys TotalCloud is 1.4%, up from 0.9% compared to the previous year. The mindshare of CoreOS Clair is 0.7%, up from 0.5% compared to the previous year. The mindshare of Tenable.io Container Security is 1.0%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Mindshare Distribution
ProductMindshare (%)
Qualys TotalCloud1.4%
Tenable.io Container Security1.0%
CoreOS Clair0.7%
Other96.9%
Container Security
 

Featured Reviews

RO
IT Security Expert at Alior Bank S.A.
Unified risk scoring has improved our cloud visibility and simplifies remediation priorities
Qualys TotalCloud provides unified vulnerability and threat assessment across both IAS and SaaS. This solution provides a single prioritized view of risk, which helps reduce the work I would have to do. We are no longer based on CVSS; we are based on Qualys risk scoring, which is based on CVSS plus internal findings made by Qualys, and then assigns its own score. The TruRisk insight feature has found a small number of assets with high vulnerability scores, though I am cautious since some information is classified. Qualys TotalCloud has positively impacted our bank's performance, and we have definitely seen benefits after implementing this solution.
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.
AS
Cyber Security Architect at a security firm with 201-500 employees
Detailed container image reports have improved vulnerability insight and support secure operations
Most valuable are the reports that are quite good, particularly the detailed ones for container image scanning. Tenable.io Container Security is giving me the vulnerability information of Docker images and the information about software bill of materials. However, my challenge at this time is that I am using all these solutions with GitLab Ultimate, and it does not support integration, so I am doing some alternate arrangements which are giving me operational complexity because I need to introduce something else instead of GitLab Ultimate. That is the primary concern regarding the benefits of real-time visibility into my containerized application security status.

Quotes from Members

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

Pros

"I would definitely recommend Qualys TotalCloud to other customers."
"Qualys TotalCloud has helped us view our risk structure, vulnerabilities, and security posture."
"Qualys TotalCloud's most valuable feature is its agent versatility."
"Qualys TotalCloud has significantly reduced our workload in terms of managing risks, helping us to be more efficient and save substantial resources."
"TotalCloud provides the easiest and the best approach for cloud infrastructure management."
"Qualys TotalCloud has positively impacted our bank's performance, and we have definitely seen benefits after implementing this solution."
"I like the web API security and IoT scanning features the most. The user-friendly design of TotalCloud's interface enables customers to navigate it and use its full potential easily"
"TotalCloud has been excellent in providing us with immediate access to all the products and features we need, such as CSPM, TruRisk Insights, and compliance reports, including CIS and HIPAA."
"CoreOS Clair can be used by organizations of any size."
"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."
"CoreOS Clair's best feature is detection accuracy."
"Most valuable are the reports that are quite good, particularly the detailed ones for container image scanning."
"By using Nessus, we are able to finish testing with assured results, in half the time."
"Nessus scanner is very effective for internal penetration testing."
"The strong security provided by the product in the container environment is its most valuable feature."
"The solution shows you the exploitable vulnerabilities and helps you prioritize."
"It helps us secure our applications from the build phase and identify the weaknesses from scratch."
"It is a scalable solution. Scalability-wise, it is a good solution."
"Tenable.io detects misconfiguration when you deploy a Docker or Kubernetes container. It's much better to remedy these issues during deployment instead of waiting until the container is already in the production environment."
 

Cons

"Qualys' customer service provides quality answers, but the response time is long, even though it is within the SLA."
"I sometimes have difficulty detecting or uninstalling certain versions of applications, which I have to do manually."
"There is a lack of data segregation according to criticality or inventory."
"There is room for improvement in vulnerability scanning, particularly for PaaS environments. Currently, Qualys does not have full access to these instances, which limits its effectiveness."
"Qualys TotalCloud's increasing complexity, due to the development and deployment of multiple solutions, is making the GUI difficult to navigate."
"Their support could be improved."
"We would like to see Windows-based sensors available in Qualys, as this would make the platform more versatile and support a broader range of environments."
"The response part of the Cloud Detection and Response (CDR) module can be improved."
"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."
"The support is tricky to reach, so we would like better-oriented technical support enabled."
"I feel that in certain areas this product has false positives which the company should work on. They should also try to include business logic vulnerabilities in the scanner testing. Finally, the vulnerability assessment feature should be increased to other hardware devices, apart from firewalls."
"I feel that in certain areas this product has false positives which the company should work on."
"However, my challenge at this time is that I am using all these solutions with GitLab Ultimate, and it does not support integration, so I am doing some alternate arrangements which are giving me operational complexity because I need to introduce something else instead of GitLab Ultimate."
"They need to work on auto-remediation so it's easier for the security team to act quickly when certain assets or resources are deployed. The latest version has a CIS benchmark that you need to meet for containers in the cloud, but more automation is needed."
"The initial setup is highly complex."
"Tenable.io Container Security should improve integration modules. It should also improve stability."
"The solution’s pricing could be improved."
 

Pricing and Cost Advice

"Qualys TotalCloud offers good pricing that is affordable and competitive with the market. Our partnership also provides us with additional benefits."
"Qualys TotalCloud is expensive, but it offers a premier solution with no headaches."
"While Qualys TotalCloud's pricing is currently acceptable, it is becoming increasingly expensive and may soon be considered overpriced."
"Although Qualys TotalCloud is relatively expensive due to its unique automation features, its cost-effectiveness is rated an eight out of ten, with ten being the most costly."
"TotalCloud's price is about right where I would expect it to be."
"It isn't cheap, but it's reasonable. It helps us to manage things with very few resources."
"I am not sure about the pricing. From what I understand, it is a bit on the higher side, but I do not have the exact numbers."
"Qualys TotalCloud is cost-efficient and was selected for its value compared to other products."
"CoreOS Clair is open-source and free of charge."
"The product does not operate on a pay-per-license model."
"The solution's pricing is neither cheap nor very expensive."
"It's best to be an institutional buyer and directly contact the sales team as they can provide over-the-top discounts for bulk orders."
"I rate the product’s pricing a six out of ten."
"I rate the tool's pricing a three out of ten."
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Top Industries

By visitors reading reviews
Manufacturing Company
19%
Financial Services Firm
13%
Construction Company
7%
Comms Service Provider
7%
Financial Services Firm
19%
Performing Arts
13%
Government
11%
Comms Service Provider
9%
Financial Services Firm
15%
Manufacturing Company
8%
Retailer
7%
Government
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise3
Large Enterprise28
No data available
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise3
Large Enterprise4
 

Questions from the Community

What needs improvement with Qualys TotalCloud?
Areas that need improvement in every solution include the remediation part. The remediation steps should be simple en...
What is your primary use case for Qualys TotalCloud?
Our use case involves the assets that we have under cloud, the assets exposed to the internet, and the internal appli...
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 ge...
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 simila...
What needs improvement with Tenable.io Container Security?
Several things need improvement about Tenable.io Container Security. First, they should support GitLab Ultimate. Seco...
What is your primary use case for Tenable.io Container Security?
I have been dealing with Tenable.io Container Security for almost four to six months.
 

Also Known As

Qualys TotalCloud with FlexScan
No data available
Tenable FlawCheck, FlawCheck
 

Overview

 

Sample Customers

Information Not Available
eBay, Veritas, Verizon, SalesForce
ServiceMaster
Find out what your peers are saying about CoreOS Clair vs. Tenable.io Container Security and other solutions. Updated: April 2026.
900,051 professionals have used our research since 2012.