No more typing reviews! Try our Samantha, our new voice AI agent.

Tenable Security Center vs The NodeZero Platform by Horizon3.ai comparison

Sponsored
 

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
5.5
Qualys TotalCloud boosts efficiency, reduces manual effort, decreases risk, and offers significant cost savings with a notable ROI.
Sentiment score
6.5
Tenable Security Center boosts ROI by minimizing costs, enhancing security, reducing manpower needs, and preventing costly data breaches.
Sentiment score
3.6
NodeZero Platform cuts pen testing costs, enhances efficiency, reduces remediation time, and uncovers hidden network issues for revenue opportunities.
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
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
A reduction in remediation time has been seen because it is finding things before they happen.
Director of Enterprise Security at a energy/utilities company with 51-200 employees
Being able to find them because there have been no eyes on that particular section so far ever, and fixing those potentially prevented those companies from getting breached.
IT Security Consultant at Systemhaus for you GmbH
So far, I have seen a return on investment with The NodeZero Platform by Horizon3.ai, as we managed to save a lot of time and effort with this because this is an autonomous tool, and our manual effort is significantly reduced because of a product of this type.
Senior Manager | Manager Security Services at RISK ASSOCIATES
 

Customer Service

Sentiment score
7.4
Qualys TotalCloud support is praised for efficiency and staff knowledge but criticized for delays and inconsistent quality.
Sentiment score
7.4
Tenable Security Center customer support is responsive and knowledgeable, with U.S. support rated higher than the European counterpart.
Sentiment score
7.0
NodeZero Platform's customer service is highly rated for responsiveness and expertise, despite occasional licensing challenges and bandwidth delays.
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
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
Overall, when it comes to The NodeZero Platform's tech support, you can reach them via a chat message on their website, and they respond almost immediately.
Director of IT Security at a manufacturing company with 1,001-5,000 employees
Previously, with time-sensitive engagements, I would worry about resolving issues before deadlines. That concern has diminished as they've become more responsive and require less escalation to engineering.
Principal Consultant at JTI Cybersecurity
The vast majority of times they are able to resolve the exact questions my team has on the first attempt, which is really good for customer or technical support.
Chief Information Officer at a construction company with 1,001-5,000 employees
 

Scalability Issues

Sentiment score
7.8
Qualys TotalCloud excels in scalability, efficiently supporting diverse environments and business sizes, though it may require skilled management.
Sentiment score
8.0
Tenable Security Center is praised for its seamless scalability, adaptability, and integration, accommodating diverse organizational needs and sizes effectively.
Sentiment score
7.2
The NodeZero Platform is scalable, supports Docker, and efficiently handles varied network assets, enhancing performance for diverse environments.
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
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
We have conducted pen tests in environments with hundreds of thousands of IP addresses without any scalability issues.
CEO at cybovate
We currently scan approximately 1,500-2,000 assets and haven't encountered any scaling or throughput issues.
Information Security Manager at a non-profit with 51-200 employees
The platform offers various insider threats, segmentation tests, phishing tests, and PCI DSS tests.
Head Dig IT Al And Response/ Consultant at a tech services company with 11-50 employees
 

Stability Issues

Sentiment score
8.3
Qualys TotalCloud is highly stable with reliable support, 99.9% uptime, minimal bugs, and effective maintenance communication.
Sentiment score
8.0
Tenable Security Center is highly stable and reliable, handling large tasks efficiently with users rating its stability highly.
Sentiment score
8.2
NodeZero Platform is stable and reliable, with minor issues easily fixed; excellent for live environments without compromising systems.
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
The stability of the solution is outstanding.
Solution engineer at EXPERTience
We have not encountered any issues on the platform regarding accessibility, performance, or stability.
CEO at cybovate
Regarding stability, it has never crashed, and there has not been any lagging from deployment or running.
Director of Enterprise Security at a energy/utilities company with 51-200 employees
I would rate the stability of The NodeZero Platform by Horizon3.ai as a ten.
Senior Manager | Manager Security Services at RISK ASSOCIATES
 

Room For Improvement

Users suggest enhancing Qualys TotalCloud with clearer reports, better integration, intuitive UI, AI risk assessments, and improved documentation.
Users desire improved reporting, third-party integration, interface design, vulnerability handling, web scanning, pricing, support, and user-friendly features.
NodeZero Platform needs enhancements in vulnerability tools, scalability, reporting, and onboarding for improved user experience and integration.
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
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
This service reveals which credentials and email addresses are available on the deep web, as well as which domains have been set up using typo-squatting techniques.
Information Security Manager at a non-profit with 51-200 employees
The one thing that is very much asked from us as a service provider is DAST testing, so when a company is building a software, they could see their current security status while they are building the application.
Offensive Security Analyst at a tech services company with 201-500 employees
One of the areas where improvement is needed is in the visibility and reporting for large enterprises.
CEO at cybovate
 

Setup Cost

Qualys TotalCloud's pricing is high yet justified by comprehensive features and flexibility, benefiting larger enterprises seeking robust security.
Tenable Security Center is costly per asset, with options including subscription and perpetual licenses, generally pricier than competitors.
Enterprise buyers find NodeZero Platform pricing competitive, cost-efficient, and flexible with IP-based licensing and low setup costs.
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
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
The pricing is much more affordable than traditional penetration tests.
Manager, Information Technology at a performing arts with 11-50 employees
It's a bit cheaper than manual penetration testing because manual testing typically allows you to scan only a few subnets.
Works at a hospitality company with 201-500 employees
Usually, manual penetration test scans take considerable time and money.
Security Engineer at Herjavec Group
 

Valuable Features

Qualys TotalCloud offers comprehensive vulnerability detection, cloud security management, and automation with insightful dashboards for efficient threat management.
Tenable Security Center offers comprehensive vulnerability management with intuitive tools, strong integration, and flexible compliance for effective threat detection.
NodeZero Platform offers automated tests, remediation guidance, and autonomous operation for streamlined, cost-effective vulnerability management with comprehensive reporting.
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
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
When a new vulnerability, such as a zero-day exploit, is identified, they review your previous scans to determine if you might be vulnerable to it, and they proactively notify you.
Director of IT Security at a manufacturing company with 1,001-5,000 employees
The detailed reports not only list the vulnerabilities that matter, but they also include direct links to patches.
Information Security Manager at a non-profit with 51-200 employees
The NodeZero Platform's real attack capabilities help in identifying vulnerabilities on our on-prem systems because it provides actual vulnerabilities by attacking our systems.
Chief Information Security Officer at a construction company with 1,001-5,000 employees
 

Categories and Ranking

Qualys TotalCloud
Sponsored
Ranking in Vulnerability Management
11th
Average Rating
8.6
Reviews Sentiment
7.3
Number of Reviews
39
Ranking in other categories
Container Security (13th), Cloud Workload Protection Platforms (CWPP) (9th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (1st), Cloud-Native Application Protection Platforms (CNAPP) (8th)
Tenable Security Center
Ranking in Vulnerability Management
6th
Average Rating
8.2
Reviews Sentiment
7.2
Number of Reviews
56
Ranking in other categories
Cloud Security Posture Management (CSPM) (11th), Risk-Based Vulnerability Management (3rd)
The NodeZero Platform by Ho...
Ranking in Vulnerability Management
9th
Average Rating
8.8
Reviews Sentiment
6.1
Number of Reviews
23
Ranking in other categories
Advanced Threat Protection (ATP) (11th), Penetration Testing Services (1st), Breach and Attack Simulation (BAS) (1st), Risk-Based Vulnerability Management (2nd)
 

Mindshare comparison

As of May 2026, in the Vulnerability Management category, the mindshare of Qualys TotalCloud is 1.0%, up from 0.9% compared to the previous year. The mindshare of Tenable Security Center is 2.8%, down from 5.1% compared to the previous year. The mindshare of The NodeZero Platform by Horizon3.ai is 1.5%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Tenable Security Center2.8%
The NodeZero Platform by Horizon3.ai1.5%
Qualys TotalCloud1.0%
Other94.7%
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.
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.
Brent Hamlin - PeerSpot reviewer
Infrastructure Manager at a construction company with 501-1,000 employees
Continuous threat scanning has improved remediation time and strengthened executive reporting
The best features that The NodeZero Platform by Horizon3.ai offers include the automated scans, which are great to use; you set it, scope it, and let it go, which works really well. The executive reporting feature is impactful for me as a manager, providing a strong foundation to give quarterly and yearly reports to our executives and board to see the state of our infrastructure from a security standpoint. The level of detail and clarity in the executive reports from The NodeZero Platform by Horizon3.ai absolutely helps me communicate effectively with leadership. They are detailed enough for me to extract the necessary information tailored for the executives and to provide a broader perspective on our mitigation efforts or accepted risk stance and where additional controls exist. The NodeZero Platform by Horizon3.ai has positively impacted my organization by giving us a better continuous picture of our security posture, what's exploitable, and what can be used against the organization. It allows us to run scans whenever needed, unlike a single third-party system that only provides a snapshot in time; our processes must be ongoing as the security landscape is dynamic. NodeZero's endpoint security effectiveness feature impacts my understanding of potential security threats by providing a clear picture of both the external and internal landscapes within my organization, enabling me to prioritize and adjust as needed for vulnerabilities such as WordPress plugin issues or user enumerations and software code version assessments. I have built The NodeZero Platform by Horizon3.ai into our weekly and monthly workflows for security CI/CD, and we scan our externally accessible assets every week to address anything quickly if it comes up. That includes our firewalls, websites, and anything that is an external web server, which we scan weekly, while the monthly scans are for internal systems that feed our security CI/CD pipeline, enabling us to action across and prioritize any vulnerabilities caught by The NodeZero Platform by Horizon3.ai.
report
Use our free recommendation engine to learn which Vulnerability Management solutions are best for your needs.
896,099 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Financial Services Firm
16%
Computer Software Company
9%
Manufacturing Company
9%
Government
8%
Financial Services Firm
12%
Manufacturing Company
11%
Government
9%
Computer Software Company
7%
Comms Service Provider
9%
Manufacturing Company
8%
Government
8%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise3
Large Enterprise28
By reviewers
Company SizeCount
Small Business22
Midsize Enterprise12
Large Enterprise27
By reviewers
Company SizeCount
Small Business14
Midsize Enterprise4
Large Enterprise7
 

Questions from the Community

What needs improvement with Qualys TotalCloud?
Areas that need improvement in every solution include the remediation part. The remediation steps should be simple en...
What is your primary use case for Qualys TotalCloud?
Our use case involves the assets that we have under cloud, the assets exposed to the internet, and the internal appli...
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...
What needs improvement with Horizon3.ai?
The NodeZero Platform by Horizon3.ai could be improved by reducing the elapsed time from identifying a zero-day vulne...
What is your primary use case for Horizon3.ai?
My main use case for The NodeZero Platform by Horizon3.ai includes pen testing and vulnerability management. I use Th...
What advice do you have for others considering Horizon3.ai?
My advice to others looking into using The NodeZero Platform by Horizon3.ai is to do yourself a favor and see what th...
 

Also Known As

Qualys TotalCloud with FlexScan
Tenable.sc, Tenable Unified Security, Tenable SecurityCenter
Horizon3.ai
 

Overview

 

Sample Customers

Information Not Available
IBM, Sempra Energy, Microsoft, Apple, Adidas, Union Pacific
Government agencies, Defense Industrial Base organizations, and enterprises in regulated industries such as finance, healthcare, manufacturing, and criticalinfrastructure rely on NodeZero to meet rigorous security and compliance requirements with continuous, scheduled, and on-demand testing.
Find out what your peers are saying about Tenable Security Center vs. The NodeZero Platform by Horizon3.ai and other solutions. Updated: May 2026.
896,099 professionals have used our research since 2012.