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Qualys Exposure Management vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 8, 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
5.0
Organizations benefit from Qualys TotalCloud with improved efficiency, enhanced security, and substantial savings in time and resources.
Sentiment score
5.8
Qualys Exposure Management enhances security and efficiency by reducing vulnerability risks, costs, and incident resolution times for increased ROI.
Sentiment score
3.5
Tenable Nessus boosts security by enhancing threat visibility, reducing vulnerabilities, saving costs, and achieving high user satisfaction.
We are able to scan all our assets with less human intervention and achieve overall effective outcomes.
Dns architect at a outsourcing company with 5,001-10,000 employees
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
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
We have seen a return on investment through reduced employee counts and decreased incident resolution times.
Senior Technical Lead at Numeric Technologies
 

Customer Service

Sentiment score
6.8
Qualys TotalCloud delivers knowledgeable support with high ratings despite occasional delays, emphasizing personalized and effective problem-solving.
Sentiment score
6.6
Qualys Exposure Management's customer service is praised for availability, but issues include overseas support, slow responses, and direct communication.
Sentiment score
4.3
Tenable Nessus support is praised for responsiveness and efficiency, with mixed feedback on response times and depth for advanced queries.
On a scale from one to ten, I would rate customer support a ten.
Head of IT at a insurance company with 201-500 employees
A more efficient solution would be to provide instant call options with engineers, comparable to features offered by other tools.
Manager SOC at a tech services company with 51-200 employees
The technical support from Qualys is excellent, always available 24/7 for any urgent needs.
Senior Consultant 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
7.3
Qualys TotalCloud excels in scalability and multi-cloud support but faces occasional performance lags and management challenges.
Sentiment score
7.9
Qualys Exposure Management offers robust scalability, praised for handling large asset volumes, though integration and cost challenges exist.
Sentiment score
5.5
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
I would rate its scalability a ten out of ten.
Senior Consultant at a consultancy with 10,001+ employees
The scalability of Qualys TotalCloud is excellent, and I would rate it as ten out of ten.
IT Architect 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
8.2
Qualys TotalCloud is praised for high stability, reliability, minimal downtime, advanced scanning, prompt support, and seamless user experience.
Sentiment score
7.8
Qualys Exposure Management is stable and efficient, with minimal downtime, excelling in vulnerability identification and handling heavy usage.
Sentiment score
6.1
Tenable Nessus is praised for stability and reliability, with high user satisfaction despite minor setup and update issues.
It has a lot of scanning mechanisms, which are agentless APIs, eBPF, and cloud agents, that are highly reliable.
Sr Security Engineer at a tech vendor with 5,001-10,000 employees
It is a stable solution, which is why we chose it.
CIO at a venture capital & private equity firm with 11-50 employees
It offers 99.9 percent uptime.
Vice President at Inspira Enterprise
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

Qualys TotalCloud needs UI/UX improvements, enhanced automation, better integration, clearer licensing, and faster vulnerability detection for competitiveness.
Qualys Exposure Management needs interface upgrades, simplified setup, better integration, improved support, and expanded IoT/SCADA assessment features.
Tenable Nessus requires enhanced reporting, better integration, modern UI, faster scans, accurate detection, and comprehensive IT asset coverage.
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
If we find a critical or high vulnerability on an IP or server, the remediation steps should be communicated clearly.
Cyber Security Manager at RJ Corp Retail
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 offers competitive pricing and flexibility, especially for large enterprises, with quick setup and comprehensive integration.
Qualys Exposure Management is costly but valued for its comprehensive features; discounts and pricing negotiations are available.
Tenable Nessus is valued for affordability and flexibility, though costs vary by organization size, IP count, and region.
In our case, replacing the tool will give us better functionalities without increasing the cost compared to what we pay today for the competitor.
Head of IT at a insurance company with 201-500 employees
Qualys TotalCloud is expensive, but it offers a premier solution with no headaches.
Vice President at Inspira Enterprise
Qualys TotalCloud offers good pricing that is affordable and competitive with the market.
Senior Consultant at a consultancy with 10,001+ employees
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 optimizes cloud security with AI, enhanced risk management, and efficient threat detection across multi-cloud environments.
Qualys Exposure Management excels in risk prioritization, AI-powered analysis, and user-friendly dashboards for comprehensive security insights.
Tenable Nessus excels in vulnerability detection, user-friendliness, scalability, real-time monitoring, integration, compliance reporting, and remediation advice.
FlexScan requires minimal intervention, and after configuration, it automatically collects data and performs necessary scans.
Senior Information Security Consultant at LTIMindtree
This user-friendly platform provides a comprehensive inventory of all assets and allows for customized policy and control design.
Manager SOC at a tech services company with 51-200 employees
Deploying a single agent provides comprehensive visibility across various cloud aspects, including workload protection, security posture management, and container security.
Vice President at Inspira Enterprise
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
5th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
54
Ranking in other categories
Container Security (8th), 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)
Qualys Exposure Management
Ranking in Vulnerability Management
2nd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
102
Ranking in other categories
IT Asset Management (5th), Configuration Management Databases (4th), Container Security (11th), Risk-Based Vulnerability Management (1st)
Tenable Nessus
Ranking in Vulnerability Management
3rd
Average Rating
8.4
Reviews Sentiment
6.2
Number of Reviews
88
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of November 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 4.0%, down from 6.6% compared to the previous year. The mindshare of Tenable Nessus is 3.6%, down from 7.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Qualys Exposure Management4.0%
Tenable Nessus3.6%
Qualys TotalCloud1.2%
Other91.2%
Vulnerability Management
 

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.
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.
reviewer1917156 - PeerSpot reviewer
Freelancer And CEO at a tech vendor with 1-10 employees
Hybrid deployments have strengthened vulnerability visibility and streamlined security reporting
I would not personally speak to what I like about Tenable Nessus, because I think the only reason many customers are using it is because it is well-known and they have received directives from their companies or mother companies. For me, the key value is the ease of use and integration with SIEMs because it has built-in integrations with IBM QRadar and others. Tenable Nessus is typically a widely integrated tool within the existing security ecosystem. It is part of the security policy that customers have implemented, so it does provide positive impact and is beneficial to use Tenable Nessus.
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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
13%
Outsourcing Company
9%
Comms Service Provider
8%
Manufacturing Company
7%
Financial Services Firm
11%
Manufacturing Company
10%
Government
7%
Outsourcing Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise11
Large Enterprise38
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise12
Large Enterprise75
By reviewers
Company SizeCount
Small Business41
Midsize Enterprise19
Large Enterprise35
 

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...
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: November 2026.
920,939 professionals have used our research since 2012.