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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
8th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
54
Ranking in other categories
Vulnerability Management (5th), Cloud Workload Protection Platforms (CWPP) (7th), Cloud Security Posture Management (CSPM) (6th), SaaS Security Posture Management (SSPM) (2nd), Cloud-Native Application Protection Platforms (CNAPP) (6th)
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 November 2026, in the Container Security category, the mindshare of Qualys TotalCloud is 1.8%, up from 1.1% compared to the previous year. The mindshare of CoreOS Clair is 0.7%, up from 0.6% compared to the previous year. The mindshare of Tenable.io Container Security is 1.1%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Mindshare Distribution
ProductMindshare (%)
Qualys TotalCloud1.8%
Tenable.io Container Security1.1%
CoreOS Clair0.7%
Other96.4%
Container Security
 

Featured Reviews

reviewer2859021 - PeerSpot reviewer
Sr Security Engineer at a tech vendor with 5,001-10,000 employees
Risk-based triage has transformed container security and now prioritizes high-impact threats
The best features Qualys TotalCloud offers currently include managing cloud infrastructure and container security while facing major challenges such as alert fatigue. Traditional vulnerability scanners flag hundreds of CVEs on short-lived Kubernetes containers, some of which have no internet exposure or are gone before we can even triage them. I leverage Qualys TotalCloud to move beyond static CVSS. I use it to implement runtime exposure, correlation risk reprioritization, and shift-left integration. This notifies developers to fix a base image upstream rather than patching live ephemeral instances. In my work with cloud and container security, the biggest operational hurdle was alert fatigue. I use Qualys to shift left from static CVSS severity to context-aware risk prioritization. I correlated raw vulnerability data with real-time risk factors such as public network exposure, active runtime execution, or overly permissive IAM roles. This allows us to immediately drop the priority of isolated containers and escalate lower-severity CVEs that sit on an exposed, high-risk path. We can map these findings directly back to our CI/CD pipelines so developers can patch the root base images upstream. We have drastically cut down the signal-to-noise ratio, saved a lot of manual hours doing triage work, and ensured engineering effort goes directly towards high-impact risk reduction.
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

"Qualys TotalCloud's most valuable features are its security capabilities that help identify and mitigate risk factors."
"The vulnerability management feature is the one I like the most because it provides a clear picture of all vulnerabilities."
"The most valuable feature of Qualys TotalCloud is the visibility it provides."
"My experience with using TruRisk to mitigate noise from raw CVEs has been extremely effective."
"With TotalCloud, we can scan through the API. If we are not able to deploy cloud agents on the machine, we can use the API."
"The scalability is good as well. I would rate it ten out of ten."
"Qualys TotalCloud has saved our time by giving us better asset visibility and risk-based prioritization, as it has reduced the time spent manually reviewing CVEs and deciding what to address first."
"One of the features I appreciate is the ability to generate daily reports without relying on anyone else."
"CoreOS Clair's best feature is detection accuracy."
"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."
"It helps us secure our applications from the build phase and identify the weaknesses from scratch."
"The tool's most valuable feature is scanning, reporting, and troubleshooting."
"The solution shows you the exploitable vulnerabilities and helps you prioritize."
"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."
"By using Nessus, we are able to finish testing with assured results, in half the time."
"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."
"It is a scalable solution. Scalability-wise, it is a good solution."
"Nessus scanner is very effective for internal penetration testing."
 

Cons

"One of the things that could be improved is the alerts. Qualys is a fantastic tool, especially with the TruRisk feature, but one challenge that most leaders face involves alert fatigue."
"There should be improvement from a dashboard perspective when collecting and showcasing data to lead management."
"To improve the user experience, reporting could be simplified for better comprehension by end users and project managers, facilitating issue resolution."
"I sometimes have difficulty detecting or uninstalling certain versions of applications, which I have to do manually."
"Qualys' customer service provides quality answers, but the response time is long, even though it is within the SLA."
"The cloud licensing unit system is unclear, especially since "units" aren't well-defined."
"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."
"There is a lack of data segregation according to criticality or inventory."
"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."
"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."
"The support is tricky to reach, so we would like better-oriented technical support enabled."
"The stability and setup phase of the product are areas with shortcomings where improvements are needed."
"I believe integration plays a crucial role for Tenable, particularly in terms of connecting with other products and various container solutions like Docker or Kubernetes. It seems that in future updates, enhanced integration is something I would appreciate. Currently, there is integration with Docker, but when it comes to Kubernetes or other container solutions, it appears to be a challenge, especially with on-prem scanners."
"I feel that in certain areas this product has false positives which the company should work on."
"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."
"Tenable.io Container Security should improve integration modules. It should also improve stability."
 

Pricing and Cost Advice

"The pricing for TotalCloud is attractive and competitive in the market. Given the features, especially the dashboard, I have no concerns regarding pricing."
"The pricing is comparable. It is built into our other product, so I cannot piecemeal it. It is a part of our subscription."
"As a middle management member, I do not have direct pricing knowledge, but based on the knowledge from our meetings, its pricing is competitive."
"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."
"Qualys TotalCloud is expensive, but it offers a premier solution with no headaches."
"Qualys TotalCloud is expensive."
"While Qualys TotalCloud's pricing is currently acceptable, it is becoming increasingly expensive and may soon be considered overpriced."
"Qualys TotalCloud is cost-efficient and was selected for its value compared to other products."
"CoreOS Clair is open-source and free of charge."
"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."
"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."
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Top Industries

By visitors reading reviews
Comms Service Provider
18%
Outsourcing Company
11%
Manufacturing Company
11%
Financial Services Firm
10%
Financial Services Firm
18%
Comms Service Provider
13%
Performing Arts
12%
Government
10%
Financial Services Firm
14%
Outsourcing Company
8%
Manufacturing Company
6%
Media Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise11
Large Enterprise38
No data available
By reviewers
Company SizeCount
Small Business2
Midsize Enterprise3
Large Enterprise4
 

Questions from the Community

What is your experience regarding pricing and costs for Qualys TotalCloud?
We purchased Qualys TotalCloud for GCP and Azure as well. It is comparatively better than others regarding pricing. T...
What needs improvement with Qualys TotalCloud?
I am unsure about how Qualys TotalCloud can be improved. I do not have anything else to add about the needed improvem...
What is your primary use case for Qualys TotalCloud?
My main use case for Qualys TotalCloud is telemetry, although I am unsure about the specifics. A quick specific examp...
Ask a question
Earn 20 points
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: September 2026.
920,929 professionals have used our research since 2012.