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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
12th
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
43
Ranking in other categories
Vulnerability Management (11th), Cloud Workload Protection Platforms (CWPP) (8th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (2nd), Cloud-Native Application Protection Platforms (CNAPP) (7th)
CoreOS Clair
Ranking in Container Security
39th
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
26th
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 August 2026, in the Container Security category, the mindshare of Qualys TotalCloud is 1.6%, up from 1.0% 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%, down from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Mindshare Distribution
ProductMindshare (%)
Qualys TotalCloud1.6%
Tenable.io Container Security1.0%
CoreOS Clair0.7%
Other96.7%
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 recommend Qualys TotalCloud to other users because it is cost-efficient and has a good return on investment."
"The best feature would be the ability to create policies. It is easy to control and update policies as required."
"Qualys TotalCloud has significantly improved our organization by automating our reporting processes, reducing the time spent on report creation from two hours to less than fifteen to twenty minutes."
"One of the features I appreciate is the ability to generate daily reports without relying on anyone else."
"TotalCloud provides the easiest and the best approach for cloud infrastructure management."
"Qualys TotalCloud is an excellent platform, and the beauty of the platform is that we can get all the vulnerabilities, see all the reports in a single dashboard, view them segregated, and easily learn about critical, high, and medium findings with appropriately provided remediation steps."
"The dashboards are particularly valuable as they offer a comprehensive view of the environment, highlighting any misconfigurations."
"I appreciate TotalCloud's real-time protection and remediation features. The remediation options include automated one-click remedies and custom changes that help manage vulnerabilities efficiently."
"CoreOS Clair can be used by organizations of any size."
"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.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."
"Currently, I haven't implemented the solution due to its deprecation by the site. However, I can highlight some benefits of Tenable Cloud Security, a cybersecurity solution with various features for scanning vulnerabilities in both cloud environments and on-premises container security."
"The strong security provided by the product in the container environment is its most valuable feature."
"It is a scalable solution. Scalability-wise, it is a good solution."
"It helps us secure our applications from the build phase and identify the weaknesses from scratch."
"By using Nessus, we are able to finish testing with assured results, in half the time."
"Most valuable are the reports that are quite good, particularly the detailed ones for container image scanning."
"The solution shows you the exploitable vulnerabilities and helps you prioritize."
 

Cons

"There is a lack of data segregation according to criticality or inventory."
"The cloud licensing unit system is unclear, especially since "units" aren't well-defined."
"Their customer support needs improvement."
"The main area needing improvement is integration. Although the team is strengthening TotalCloud, integration can be enhanced with SIEM, SOAR, ITSM, and other sources."
"I think Qualys TotalCloud needs to improve its handling of zero-day vulnerabilities and supply chain management because modern ransomware attacks not only target prime critical infrastructures but also the supply chain system."
"Qualys TotalCloud needs to enhance its scanning capabilities in the IP domain, as it currently lacks the functionality to resolve IPs to their corresponding domain names."
"The response part of the Cloud Detection and Response (CDR) module can be improved."
"I sometimes have difficulty detecting or uninstalling certain versions of applications, which I have to do manually."
"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."
"The support is tricky to reach, so we would like better-oriented technical support enabled."
"Tenable.io Container Security should improve integration modules. It should also improve stability."
"I feel that in certain areas this product has false positives which the company should work on."
"The initial setup is highly complex."
"The stability and setup phase of the product are areas with shortcomings where improvements are needed."
"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."
"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."
"The solution’s pricing could be improved."
 

Pricing and Cost Advice

"Qualys TotalCloud is expensive."
"It isn't cheap, but it's reasonable. It helps us to manage things with very few resources."
"TotalCloud's price is about right where I would expect it to be."
"Its price seems higher compared to other tools, but it is worth it. If they could adjust the pricing and make it comparable with other tools, that would be great."
"Qualys TotalCloud offers cost-effective licensing flexibility."
"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."
"The cost is high, but it meets our organizational needs."
"The pricing is comparable. It is built into our other product, so I cannot piecemeal it. It is a part of our subscription."
"CoreOS Clair is open-source and free of charge."
"I rate the tool's pricing a three out of ten."
"The solution's pricing is neither cheap nor very expensive."
"I rate the product’s pricing a six out of ten."
"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."
"The product does not operate on a pay-per-license model."
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Comms Service Provider
12%
Outsourcing Company
11%
Financial Services Firm
10%
Financial Services Firm
16%
Performing Arts
13%
Government
11%
Comms Service Provider
11%
Financial Services Firm
13%
Manufacturing Company
8%
Outsourcing Company
8%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business12
Midsize Enterprise5
Large Enterprise31
No data available
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise3
Large Enterprise4
 

Questions from the Community

What needs improvement with Qualys TotalCloud?
To be totally honest, I do not have any best features because I have had a bad experience using this tool, especially...
What is your primary use case for Qualys TotalCloud?
My main use case for Qualys TotalCloud is vulnerability management and exposure management. I use this tool to evalua...
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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.
What advice do you have for others considering Tenable.io Container Security?
Tenable.io Container Security is a good product. I am currently using Tenable Enclave Security. When I say metrics, I...
 

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: August 2026.
909,725 professionals have used our research since 2012.