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Tenable Nessus vs Tenable Security Center comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 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
3.5
Tenable Nessus boosts security by enhancing threat visibility, reducing vulnerabilities, saving costs, and achieving high user satisfaction.
Sentiment score
6.5
Tenable Security Center boosts ROI by minimizing costs, enhancing security, reducing manpower needs, and preventing costly data breaches.
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
If we cannot adjust how to operate the solution, then it becomes very difficult, so hearing and initial tuning are very important.
Marketing Expert at J's communication
Through the use of Tenable Security Center, my clients achieve more efficient patching and gain visibility and understanding of security operations, leading to improved resilience and infrastructure insight.
Solution engineer at EXPERTience
 

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
4.3
Tenable Nessus support is praised for responsiveness and efficiency, with mixed feedback on response times and depth for advanced queries.
Sentiment score
7.4
Tenable Security Center customer support is responsive and knowledgeable, with U.S. support rated higher than the European counterpart.
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
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
Longer response times and less thorough assistance.
Solution engineer at EXPERTience
They are helpful and were very helpful to us, coordinating with us on several issues.
Head of Information Security at a consultancy with 1,001-5,000 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
5.5
Tenable Nessus is scalable and flexible for most organizations but may face limitations with very large enterprises.
Sentiment score
8.0
Tenable Security Center is praised for its seamless scalability, adaptability, and integration, accommodating diverse organizational needs and sizes effectively.
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
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
I can scale it extensively with the use of agents, allowing scanning in restrictive environments and loosely connected devices.
Solution engineer at EXPERTience
Scalability is a bit limited with Tenable Security Center.
Cyber Security Consultant at a tech services company 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
6.1
Tenable Nessus is praised for stability and reliability, with high user satisfaction despite minor setup and update issues.
Sentiment score
8.0
Tenable Security Center is highly stable and reliable, handling large tasks efficiently with users rating its stability highly.
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
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
The stability of the solution is outstanding.
Solution engineer at EXPERTience
 

Room For Improvement

Qualys TotalCloud needs UI/UX improvements, enhanced automation, better integration, clearer licensing, and faster vulnerability detection for competitiveness.
Tenable Nessus requires enhanced reporting, better integration, modern UI, faster scans, accurate detection, and comprehensive IT asset coverage.
Users desire improved reporting, third-party integration, interface design, vulnerability handling, web scanning, pricing, support, and user-friendly features.
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
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
It's important for Tenable to catch up on testing capabilities that are present in solutions like Qualys.
Cyber Security Consultant at a tech services company with 1-10 employees
The reports and plugins for reports and scans could benefit from enhancements.
IT Helpdesk at a manufacturing company with 51-200 employees
Translating reports into European languages is especially relevant in Central Eastern Europe, where clients often require reports in local languages.
Solution engineer at EXPERTience
 

Setup Cost

Qualys TotalCloud offers competitive pricing and flexibility, especially for large enterprises, with quick setup and comprehensive integration.
Tenable Nessus is valued for affordability and flexibility, though costs vary by organization size, IP count, and region.
Tenable Security Center is costly per asset, with options including subscription and perpetual licenses, generally pricier than competitors.
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
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
The product is somewhat pricey, reflecting its valuable features and status as a high-quality solution in the vulnerability management market.
IT Helpdesk at a manufacturing company with 51-200 employees
Tenable Security Center is quite expensive, particularly for the CEE region, causing us to lose cases due to its pricing.
Solution engineer at EXPERTience
The price of Tenable Security Center is not so high; it's relatively a cheaper solution.
Marketing Expert at J's communication
 

Valuable Features

Qualys TotalCloud optimizes cloud security with AI, enhanced risk management, and efficient threat detection across multi-cloud environments.
Tenable Nessus excels in vulnerability detection, user-friendliness, scalability, real-time monitoring, integration, compliance reporting, and remediation advice.
Tenable Security Center offers comprehensive vulnerability management with intuitive tools, strong integration, and flexible compliance for effective threat detection.
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
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
We obtained good reports showing when patches were closed and the details of each patch, including who executed it and everything related to the patching process until it was closed.
Head of Information Security at a consultancy with 1,001-5,000 employees
Tenable Security Center provides an overall score of vulnerabilities, comparing an organization with others in the same industry.
IT Helpdesk at a manufacturing company with 51-200 employees
The most effective feature of Tenable Security Center for detecting vulnerabilities is its capability for critical mapping.
Cyber Security Consultant at a tech services company 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)
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
Tenable Security Center
Ranking in Vulnerability Management
18th
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
56
Ranking in other categories
Cloud Security Posture Management (CSPM) (24th), Risk-Based Vulnerability Management (9th)
 

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 Tenable Nessus is 3.6%, down from 7.2% compared to the previous year. The mindshare of Tenable Security Center is 2.4%, down from 3.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Tenable Nessus3.6%
Qualys TotalCloud1.2%
Tenable Security Center2.4%
Other92.8%
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.
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.
reviewer1534134 - PeerSpot reviewer
Head of Information Security at a consultancy with 1,001-5,000 employees
Centralized analytics have strengthened patch visibility and support efficient regulatory reporting
From my experience, I assess the product's analytics capabilities as successful. It helped us significantly with patching and managing the risk of the patching process across all our environments, including network devices with Windows and Unix systems. The product covered several environments and gave us exactly what we needed in our environment. Tenable Security Center's centralized platform helped with risk assessment and management across our IT environments. It covered the patching process, and we previously faced many issues regarding how to patch different environments, how to monitor the patching process, and whether it was successful or not. We obtained good reports showing when patches were closed and the details of each patch, including who executed it and everything related to the patching process until it was closed. This gave us good details about the process which helped us significantly in our reporting and even in audits, whether internal or external. We learned how to close audit issues safely and successfully. We used the dashboards for real-time threat insights and extracted several dashboards from Tenable Security Center. We use these dashboards in our cybersecurity dashboard and committees that we have. These dashboards are part of our committees, especially the cybersecurity committee and other committees that we attend.
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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
11%
Manufacturing Company
10%
Government
7%
Outsourcing Company
7%
Manufacturing Company
12%
Financial Services Firm
11%
Outsourcing Company
8%
Government
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 Business41
Midsize Enterprise19
Large Enterprise35
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise12
Large Enterprise27
 

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...
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...
What is your experience regarding pricing and costs for Tenable SC?
The price of Tenable Security Center is not so high; it's relatively a cheaper solution.
What needs improvement with Tenable SC?
We did conduct a long implementation which relates to what I think can be improved about Tenable Security Center. In ...
What is your primary use case for Tenable SC?
The typical use case for Tenable Security Center is that it is an on-premise solution, and it can use the agent and a...
 

Also Known As

Qualys TotalCloud with FlexScan
No data available
Tenable.sc, Tenable Unified Security, Tenable SecurityCenter
 

Overview

 

Sample Customers

Information Not Available
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
IBM, Sempra Energy, Microsoft, Apple, Adidas, Union Pacific
Find out what your peers are saying about Tenable Nessus vs. Tenable Security Center and other solutions. Updated: November 2026.
920,939 professionals have used our research since 2012.