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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
7.1
Number of Reviews
53
Ranking in other categories
Vulnerability Management (10th), Cloud Workload Protection Platforms (CWPP) (9th), 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
38th
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
25th
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 October 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 1.0%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Container Security Mindshare Distribution
ProductMindshare (%)
Qualys TotalCloud1.8%
Tenable.io Container Security1.0%
CoreOS Clair0.7%
Other96.5%
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

"Vulnerability and threat detection and assessment of the criticality of the vulnerabilities exposed are most valuable."
"I found the initial setup user-friendly."
"Qualys TotalCloud's most valuable features are its security capabilities that help identify and mitigate risk factors."
"I would definitely recommend it because it is easy to handle any cloud resources."
"The scalability is good as well. I would rate it ten out of ten."
"I rate the breadth of FlexScan in providing visibility into on-premises, multicloud, and container environments as fantastic."
"Qualys TotalCloud is overall the best tool available in the market for scanning purposes."
"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."
"By using Nessus, we are able to finish testing with assured results, in half the time."
"It helps us secure our applications from the build phase and identify the weaknesses from scratch."
"The solution shows you the exploitable vulnerabilities and helps you prioritize."
"The tool's most valuable feature is scanning, reporting, and troubleshooting."
"It is a scalable solution. Scalability-wise, it is a good solution."
"Most valuable are the reports that are quite good, particularly the detailed ones for container image scanning."
"The strong security provided by the product in the container environment is its most valuable feature."
"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's ticketing system can be confusing when assigning tasks to individuals, and support could be improved by offering instant call solutions with engineers in addition to ticket replies."
"I would like the ability to disable certain default built-in policies as they can be misleading when creating dashboards. That is the top one."
"The support process is inefficient due to the excessive number of replies required when submitting tickets."
"Some major banks and insurance companies require an on-premises solution for comprehensive vulnerability management, which TotalCloud does not offer."
"In my opinion, the combination of detection and protection features in Qualys TotalCloud cannot protect but can only detect."
"Two areas for improvement in Qualys TotalCloud are the speed of the public cloud platform and vulnerability detection."
"The vulnerability part is good, but the policy compliance module needs improvement because it involves a lot of manual work. Specifically, the remediation part of the controls requires enhancements."
"I would appreciate additional integration options to connect Qualys TotalCloud with our other vulnerability management tools."
"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."
"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."
"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 initial setup is highly complex."
"I feel that in certain areas this product has false positives which the company should work on."
"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 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."
"The solution’s pricing could be improved."
 

Pricing and Cost Advice

"As a middle management member, I do not have direct pricing knowledge, but based on the knowledge from our meetings, its pricing is competitive."
"Qualys TotalCloud is expensive."
"The cost is high, but it meets our organizational needs."
"Qualys TotalCloud offers competitive pricing given its comprehensive suite of features, including integration, assessment, remediation, and detection capabilities, all within a single platform."
"Qualys TotalCloud offers good pricing that is affordable and competitive with the market. Our partnership also provides us with additional benefits."
"The pricing for TotalCloud is attractive and competitive in the market. Given the features, especially the dashboard, I have no concerns regarding pricing."
"Qualys TotalCloud is cost-efficient and was selected for its value compared to other products."
"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."
"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."
"The solution's pricing is neither cheap nor very expensive."
"I rate the tool's pricing a three out of ten."
"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
12%
Manufacturing Company
11%
Financial Services Firm
11%
Financial Services Firm
17%
Comms Service Provider
14%
Performing Arts
12%
Government
10%
Financial Services Firm
14%
Outsourcing Company
8%
Manufacturing Company
8%
Media Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise10
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?
I was not involved in pricing, setup cost, and licensing, but I can say that the setup was fast, within a quarter, an...
What needs improvement with Qualys TotalCloud?
In terms of improvements, the features we are using in Qualys TotalCloud are working in the best optimal way, and I d...
What is your primary use case for Qualys TotalCloud?
I have been using Qualys TotalCloud for the last eight months to scan the hardware and the virtual devices in our inf...
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.
917,181 professionals have used our research since 2012.