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Qualys Exposure Management vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Aug 13, 2026

Review summaries and opinions

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

ROI

Sentiment score
5.3
Qualys TotalCloud enhances efficiency, reduces costs by 30-40%, and increases ROI by 10-20%, significantly saving time and resources.
Sentiment score
7.0
Qualys VMDR enhances vulnerability management, boosting security, reducing risks, saving resources, improving efficiency, and delivering ROI and compliance.
Sentiment score
3.0
Tenable Nessus boosts security by enhancing threat visibility, reducing vulnerabilities, saving costs, and achieving high user satisfaction.
It has saved about 90% of our time.
Senior Consultant at a consultancy with 10,001+ employees
TotalCloud has generated overall savings of 30 to 40 percent across various departments.
Security Manager at a consultancy with 10,001+ employees
CallStream helps us integrate and automate tasks.
Senior Security Consultant at CyberNxt Solutions LLP
We saw a return on investment through significant savings in time, money, and resources.
System Admin at a tech services company with 10,001+ employees
 

Customer Service

Sentiment score
7.0
Qualys TotalCloud's customer support is praised for expertise and responsiveness but occasionally faces response delays and inefficiencies.
Sentiment score
6.6
Qualys VMDR's support is responsive and knowledgeable, but users desire faster resolutions and improved service level agreements.
Sentiment score
3.9
Tenable Nessus support is praised for responsiveness and efficiency, with mixed feedback on response times and depth for advanced queries.
They are helpful, respond to my queries, and can answer any question.
Developer at a consultancy with 10,001+ employees
Qualys's tech support is highly responsive, providing multiple ways to interact with them.
Service Manager, Security Operations at CDA IT SOLUTIONS
Qualys' customer service provides quality answers, but the response time is long, even though it is within the SLA.
Works at a consultancy with 10,001+ employees
The GUI in Qualys Enterprise TruRisk Management is excellent.
Senior Manager at a financial services firm with 10,001+ employees
We usually get on calls with tech support, and they are very helpful.
Works at a comms service provider with 1-10 employees
False positives are the main issue that we encounter and need to be handled by the support team.
Senior Project Engineer at CDACINDIA
We received support within one to three hours.
CIO at a insurance company with 201-500 employees
Whenever any issue arises, we contact the support, and they are always there for us.
Information security engineer at Cyberisk
The technical support is good yet could improve in terms of response time.
SOC Engineer at a outsourcing company with 10,001+ employees
 

Scalability Issues

Sentiment score
7.5
Qualys TotalCloud excels in scalability but may need skilled management, adaptable for varying environments and large-scale deployments.
Sentiment score
7.9
Qualys VMDR is praised for scalability, flexibility, and effective asset management despite potential cost and reporting slowdowns.
Sentiment score
5.2
Tenable Nessus is scalable and flexible for most organizations but may face limitations with very large enterprises.
We started our organization about nine months back. We started with about 30 users, and we now have more than 100 users.
CIO at a venture capital & private equity firm with 11-50 employees
Our organization currently uses it to manage over 1200 web applications.
Analyst, Information Security at Infosys
It is absolutely scalable, and I would rate its scalability as nine out of ten.
retired at a consultancy with 10,001+ employees
It is flexible and scalable, and we can use it and modify it as per our needs.
Junior Associate at ESDS Software Solution Pvt Ltd.
Scalability depends on the license and the number of assets being monitored.
System Admin at a tech services company with 10,001+ employees
Scalability is not a challenge.
Senior Manager at a financial services firm with 10,001+ employees
Whether managing 50 servers today or 500 tomorrow, performance or capacity are not hindered.
SOC Engineer at a outsourcing company with 10,001+ employees
Tenable Nessus is definitely scalable, especially for license formats designed for scalability.
Security Center Coordinator at a comms service provider with 1-10 employees
 

Stability Issues

Sentiment score
8.3
Qualys TotalCloud is praised for stability, boasting 99.9% uptime with minimal downtime and quickly resolved minor bugs.
Sentiment score
7.9
Qualys VMDR is highly reliable, with stable performance, rare issues, and effective passive scanning, though reporting concerns exist.
Sentiment score
5.8
Tenable Nessus is praised for stability and reliability, with high user satisfaction despite minor setup and update issues.
Overall, the support provided has been excellent.
Analyst, Information Security at Infosys
It is a stable solution, which is why we chose it.
CIO at a venture capital & private equity firm with 11-50 employees
Continuous monitoring is crucial to ensure system stability and avoid vulnerabilities or threats.
Developer at a consultancy with 10,001+ employees
Qualys VMDR is stable.
Cyber Security Solution Engineer at a computer software company with 201-500 employees
This tool has good and excellent performance in the companies that we sell to in the last months for customers, so stability is evident.
QA Manager at a consultancy with 51-200 employees
I rate the stability of Qualys Enterprise TruRisk Management at eight point five out of ten because I occasionally find bugs that are frustrating, and I have already commented on the support issues.
Senior Manager at a financial services firm with 10,001+ employees
We have not encountered any issues with missing network items or errors in API and webhook interactions.
SOC Engineer at a outsourcing company with 10,001+ employees
The stability of Tenable Nessus is extraordinary.
Founder at Cipheroot Cybersecurity Solutions
 

Room For Improvement

Users recommend enhancing compliance, UI, integration, and reporting, improving security features, and optimizing pricing and navigation for Qualys TotalCloud.
Qualys VMDR needs UI, reporting, integration improvements and better support to address user challenges with false positives and pricing.
Tenable Nessus requires enhanced reporting, better integration, modern UI, faster scans, accurate detection, and comprehensive IT asset coverage.
Ideally, the scanner should automatically detect and scan all subdomains, even if not explicitly defined, ensuring comprehensive vulnerability assessment.
Analyst, Information Security at Infosys
Ideally, updates should be more immediate, enabling quicker implementation of solutions.
Project Lead at Persistent Systems
Our goal is to integrate all these functions into Qualys, creating a single dashboard for comprehensive security monitoring and management.
Senior Information Security Engineer at a consultancy with 10,001+ employees
The main issue is the reporting delay, and sometimes the Qualys Enterprise TruRisk Management agent will not scan the system, which means we do not receive accurate reports in a timely manner.
System Engineer at a outsourcing company with 10,001+ employees
It does not automate patching unless the patch management module is purchased separately.
System Admin at a tech services company with 10,001+ employees
If AI features were integrated, it could enhance the capabilities significantly.
Information Security Analyst at a tech services company with 51-200 employees
This is Tenable's property. They want to sell Tenable Security Center, and they closed all the API capability for Tenable Nessus Professional.
Co-Founder at RSU Consultancy
An AI feature that helps them discover options without requiring them to deep dive into all features or guides them through advisory functions would be beneficial.
Freelancer And CEO at a tech vendor with 1-10 employees
The documentation is not well-organized, which can be confusing when searching for solutions or specific information related to Tenable Nessus Professional.
SOC Engineer at a outsourcing company with 10,001+ employees
 

Setup Cost

Qualys TotalCloud is costly but offers value and integration, ideal for enterprises despite higher pricing.
Qualys VMDR pricing is competitive but may be high, with discounts and customization available based on usage and enterprise size.
Tenable Nessus is valued for affordability and flexibility, though costs vary by organization size, IP count, and region.
Qualys TotalCloud's pricing is currently acceptable, it is becoming increasingly expensive.
Senior Manager at a financial services firm with 10,001+ employees
Pricing is managed by our finance team; however, Qualys TotalCloud offers cost-effective licensing flexibility.
IT Manager at a consultancy with 10,001+ employees
Qualys TotalCloud is expensive, but it offers a premier solution with no headaches.
Vice President at Inspira Enterprise
I would rate the pricing between seven to eight out of ten.
System Admin at a tech services company with 10,001+ employees
I have a notion that Qualys might be more expensive than Rapid7.
Information Security Analyst at a tech services company with 51-200 employees
Qualys offers better pricing and is feature-packed compared to other tools.
Works at a comms service provider with 1-10 employees
The pricing for Tenable Nessus has increased significantly, tripling over the last few years.
Security Center Coordinator at a comms service provider with 1-10 employees
Tenable Nessus's pricing is adequate if it is fully utilized.
SOC Engineer at a outsourcing company with 10,001+ employees
When we compare it to other solutions, it is more difficult for us to negotiate the price for Tenable Nessus than to negotiate the price with Rapid7.
Freelancer And CEO at a tech vendor with 1-10 employees
 

Valuable Features

Qualys TotalCloud enhances risk management with misconfiguration detection, TruRisk integration, continuous monitoring, automation, and seamless integration for IaaS and SaaS.
Qualys VMDR offers comprehensive vulnerability management with effective prioritization, continuous monitoring, and robust integration for efficient threat management.
Tenable Nessus excels in vulnerability detection, user-friendliness, scalability, real-time monitoring, integration, compliance reporting, and remediation advice.
This view of risk helps reduce the work we would have to do to combine multiple sources to prioritize risk.
Works at a consultancy with 10,001+ employees
It will help cybersecurity professionals monitor the cloud and find vulnerabilities.
Developer at a consultancy with 10,001+ employees
We are enjoying the new feature, FlexScan, which is valuable for Internet-facing VMs.
Senior Consultant at a consultancy with 10,001+ employees
The prioritization of vulnerabilities has improved our remediation efforts by around thirty to thirty-five percent.
Works at a comms service provider with 1-10 employees
It impacts my workflow overall, with the patch management features as it has the missing patches listed in detail, making it easier to get a comprehensive report and providing some dashboards that offer visual representation.
JMS, RPSG Ventures Limited at RP Sanjiv Goenka Group
Qualys VMDR's continuous monitoring capabilities help us respond to emergent threats by enabling my team to reach out to the security engineers whenever there is any detection of a vulnerability, informing them about it, and creating an incident.
Soc Lead & Edr Administration at Persistent Systems
I mostly use the configuration audit feature for the audit configuration as a scan policy, and I will use it for credential audit, which helps me scan credentials access such as local administrator or root access, performing a deeper and more accurate check of local configuration settings and file systems, making it a highly recommended feature.
Founder at Cipheroot Cybersecurity Solutions
The scanning and reporting features are the most valuable aspects of Tenable Nessus.
SOC Engineer at a outsourcing company with 10,001+ employees
The most valuable features of Tenable Nessus include its ease of access and quick usability.
Security Center Coordinator at a comms service provider with 1-10 employees
 

Categories and Ranking

Qualys TotalCloud
Sponsored
Ranking in Vulnerability Management
10th
Average Rating
8.6
Reviews Sentiment
7.2
Number of Reviews
41
Ranking in other categories
Container Security (11th), Cloud Workload Protection Platforms (CWPP) (7th), Cloud Security Posture Management (CSPM) (7th), SaaS Security Posture Management (SSPM) (2nd), Cloud-Native Application Protection Platforms (CNAPP) (6th)
Qualys Exposure Management
Ranking in Vulnerability Management
3rd
Average Rating
8.4
Reviews Sentiment
7.0
Number of Reviews
101
Ranking in other categories
IT Asset Management (3rd), Configuration Management Databases (3rd), Container Security (10th), Risk-Based Vulnerability Management (1st)
Tenable Nessus
Ranking in Vulnerability Management
2nd
Average Rating
8.4
Reviews Sentiment
6.0
Number of Reviews
88
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of August 2026, in the Vulnerability Management category, the mindshare of Qualys TotalCloud is 1.2%, up from 1.0% compared to the previous year. The mindshare of Qualys Exposure Management is 3.8%, down from 7.0% compared to the previous year. The mindshare of Tenable Nessus is 3.7%, down from 8.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Tenable Nessus3.7%
Qualys VMDR3.8%
Qualys TotalCloud1.2%
Other91.3%
Vulnerability Management
 

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.
Ajay Paul - PeerSpot reviewer
System Engineer at a outsourcing company with 10,001+ employees
Vulnerability management has prioritized high‑risk patching and simplified bulk system reporting
The primary issue is with the reporting functionality. Even though we fix vulnerabilities, the reports do not reflect the changes immediately. Sometimes we need to manually run a script to scan the systems before Qualys Enterprise TruRisk Management will update the scan results. The main issue is the reporting delay, and sometimes the Qualys Enterprise TruRisk Management agent will not scan the system, which means we do not receive accurate reports in a timely manner. Additionally, there are many metrics for calculating vulnerabilities, such as the Qualys ID, severity scores, CVSS scores, and other metrics. The abundance of information can be confusing. These two aspects are the most significant negatives I have experienced with this tool.
MohammedJaffir - PeerSpot reviewer
Founder at Cipheroot Cybersecurity Solutions
Has enabled me to reduce false positives and perform deep credential auditing with seamless integrations
I mostly use the configuration audit feature for the audit configuration as a scan policy, and I will use it for credential audit, which helps me scan credentials access such as local administrator or root access, performing a deeper and more accurate check of local configuration settings and file systems, making it a highly recommended feature. Regarding integration capabilities, we can integrate Tenable Nessus with SIM tools such as Splunk, IBM QRadar, and Azure Sentinel, as well as with ticketing systems such as ServiceNow, Jira, and Slack. There is no complexity as it is very easy to integrate everything. In terms of the reporting feature, while vulnerability scanning can throw some false positives, Tenable Nessus has very few, achieving a reduction of 75% to 80% false positives with manual analysis needed. We can generate standard Nessus reports that typically include host summaries and vulnerabilities by host and plugin, alongside solutions and remediation recommendations. The main benefits I get from Tenable Nessus are complete asset inventory and comprehensive attack surface management, allowing us to prioritize vulnerabilities based on risk, focusing on true risk and threat path analysis.
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Top Industries

By visitors reading reviews
Manufacturing Company
13%
Outsourcing Company
11%
Comms Service Provider
10%
Financial Services Firm
10%
Financial Services Firm
15%
Manufacturing Company
7%
Construction Company
6%
Outsourcing Company
6%
Financial Services Firm
10%
Manufacturing Company
10%
Government
9%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise5
Large Enterprise30
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise12
Large Enterprise74
By reviewers
Company SizeCount
Small Business40
Midsize Enterprise19
Large Enterprise35
 

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...
What is your experience regarding pricing and costs for Qualys VMDR?
My experience with pricing, setup cost, and licensing shows that we can consider both time and money saved.
What needs improvement with Qualys VMDR?
I haven't explored Qualys VMDR's vulnerability lifecycle automation yet. One of my analysts mentioned that queries la...
What advice do you have for others considering Qualys VMDR?
I have some understanding about PeerSpot, and I have visited the website. PeerSpot is similar to TrustRadius. It take...
How would you choose between Rapid7 InsightVM and Tenable Nessus?
You have full visibility across cloud, network, virtual, and containerized infrastructures with Rapid7 Insight VM. Yo...
What's the difference between Tenable Nessus and Tenable.io Vulnerability Management?
Tenable Nessus is a vulnerability assessment solution that is both easy to deploy and easy to manage. The design of ...
What is your experience regarding pricing and costs for Tenable Nessus?
Based on my experience, the pricing for Tenable Nessus is somewhat higher, but customers still want to pay for it, so...
 

Also Known As

Qualys TotalCloud with FlexScan
Qualys VM, QualysGuard VM, Qualys Asset Inventory, Qualys Container Security
No data available
 

Overview

 

Sample Customers

Information Not Available
Agrokor Group, American Specialty Health, American State Bank, Arval, Life:), Axway, Bank of the West, Blueport Commerce, BSkyB, Brinks, CaixaBank, Cartagena, Catholic Health System, CEC Bank, Cegedim, CIGNA, Clickability, Colby-Sawyer College, Commercial Bank of Dubai, University of Utah, eBay Inc., ING Singapore, National Theatre, OTP Bank, Sodexo, WebEx
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
Find out what your peers are saying about Qualys Exposure Management vs. Tenable Nessus and other solutions. Updated: August 2026.
909,563 professionals have used our research since 2012.