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Tenable Vulnerability Management vs The NodeZero Platform by Horizon3.ai 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
5.2
Organizations benefit from Qualys TotalCloud with improved efficiency, enhanced security, and substantial savings in time and resources.
Sentiment score
6.7
Tenable Vulnerability Management boosts efficiency, reduces costs, identifies vulnerabilities, and offers significant time savings and process improvements.
Sentiment score
3.8
NodeZero Platform cuts pen testing costs, boosts efficiency, and enables unlimited testing, leading to savings and positive feedback.
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
An analyst previously needed to go and analyze and take days to identify an alert or issue, whereas it takes minutes now.
Information Resources Coordinator - Application at PowerGen
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
6.9
Qualys TotalCloud delivers knowledgeable support with high ratings despite occasional delays, emphasizing personalized and effective problem-solving.
Sentiment score
6.2
Tenable support is available 24/7, highly knowledgeable, but often slow in resolving complex issues needing improvement.
Sentiment score
7.1
NodeZero Platform offers swift, effective customer support with high satisfaction, despite minor mid-contract licensing concerns.
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
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
It needs improvement in response time and addressing feature requests promptly.
Infrastructure patching Manager at a manufacturing company with 1,001-5,000 employees
The technical support of Tenable Vulnerability Management is available 24/7, and whenever we require support, we can get it within five minutes.
Windows Security Patching Operation III (Cyber Operations) at CBTS
Tenable Vulnerability Management's customer support is excellent as it is available 24/7.
Information Resources Coordinator - Application at PowerGen
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
7.4
Qualys TotalCloud excels in scalability and multi-cloud support but faces occasional performance lags and management challenges.
Sentiment score
7.6
Tenable Vulnerability Management offers scalable, cloud-based solutions for diverse industries, efficiently adapting to growing organizational needs.
Sentiment score
7.2
The NodeZero Platform by Horizon3.ai excels in scalability, adaptability, and extensive network coverage for large-scale security deployments.
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
They can seamlessly scale the number of endpoints from 100 to 1,000,000 in a day.
Infrastructure patching Manager at a manufacturing company with 1,001-5,000 employees
Tenable Vulnerability Management is highly scalable.
Windows Security Patching Operation III (Cyber Operations) at CBTS
With the growing needs of our company, Tenable Vulnerability Management is able to safely adapt.
Deputy Global Chief Information Security Officer at Nissan Digital
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
8.4
Qualys TotalCloud is praised for high stability, reliability, minimal downtime, advanced scanning, prompt support, and seamless user experience.
Sentiment score
8.2
Tenable Vulnerability Management is highly stable, reliable, with minimal issues, occasionally requiring configuration adjustments, earning user trust.
Sentiment score
8.3
The NodeZero Platform is noted for its stability, minimal issues, easy resolution, and smooth production performance despite rare downtimes.
Overall, the support provided has been excellent.
Analyst, Information Security at Infosys
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
I have faced no stability issues with Tenable.
Infrastructure patching Manager at a manufacturing company with 1,001-5,000 employees
The stability is commendable, and I would rate Tenable ten out of ten.
Technical Lead at a healthcare company with 10,001+ employees
The stability of Tenable Vulnerability Management is highly reliable.
Windows Security Patching Operation III (Cyber Operations) at CBTS
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

Qualys TotalCloud needs UI/UX improvements, enhanced automation, better integration, clearer licensing, and faster vulnerability detection for competitiveness.
Tenable Vulnerability Management needs user-friendliness, better customization, enhanced support, training, and improved integration with third-party tools.
NodeZero Platform needs improvements in testing, scalability, integration, usability, automation, and reporting for better user experience and efficiency.
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
If a type of certification training could be introduced for Tenable Vulnerability Management, it would be a great asset to have on someone's resume.
Information Resources Coordinator - Application at PowerGen
They should also accelerate the process of implementing new features upon request.
Infrastructure patching Manager at a manufacturing company with 1,001-5,000 employees
I would suggest HP WebInspect as a better option than Tenable.io.
Technical Lead at a healthcare company with 10,001+ employees
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
If that pen test could be load balanced on more than one system, I believe The NodeZero Platform by Horizon3.ai could leverage that system and complete penetration tests in a much quicker time frame, providing quicker results to customers.
Lead Security Engineer at a healthcare company with 10,001+ employees
 

Setup Cost

Qualys TotalCloud offers competitive pricing and flexibility, especially for large enterprises, with quick setup and comprehensive integration.
Tenable's pricing is high but valued for its support, with calls for flexible options amid affordable competitors.
Horizon3.ai's NodeZero Platform is praised for cost-efficiency, flexible IP-based licensing, and stable, competitively advantageous pricing.
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'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
Tenable charges around $40 per device, while Rapid7 costs $10 to $15 per device.
Infrastructure patching Manager at a manufacturing company with 1,001-5,000 employees
I would not say very expensive for Tenable Vulnerability Management; it is not prohibitive, but at the same time, there are some other tools in the marketplace which are offering the same kind of services that Tenable offers, the same kind of features that Tenable has offered at a lesser cost.
Deputy Global Chief Information Security Officer at Nissan Digital
The cost was reasonable and within our budget.
Information Resources Coordinator - Application at PowerGen
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 optimizes cloud security with AI, enhanced risk management, and efficient threat detection across multi-cloud environments.
Tenable Vulnerability Management provides scalable, user-friendly security solutions with robust scanning, real-time alerts, comprehensive visibility, and seamless integration.
NodeZero Platform simplifies vulnerability management with automated scans, real attack simulations, and streamlined processes, enhancing overall cybersecurity.
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
Tenable enables vulnerability management through potential AI integration that consolidates efforts and resolves multiple vulnerabilities simultaneously.
Infrastructure patching Manager at a manufacturing company with 1,001-5,000 employees
The main benefit of integration with Tenable Vulnerability Management is that there will be no lack of missing vulnerabilities when it comes to the patching environment.
Windows Security Patching Operation III (Cyber Operations) at CBTS
The main benefits that Tenable Vulnerability Management provides for me as an end user include saving time and money and streamlining processes.
Cyber Security Consultant at a tech vendor with 10,001+ 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
10th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
53
Ranking in other categories
Container Security (11th), 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)
Tenable Vulnerability Manag...
Ranking in Vulnerability Management
11th
Average Rating
8.2
Reviews Sentiment
6.9
Number of Reviews
47
Ranking in other categories
Patch Management (14th), Risk-Based Vulnerability Management (4th)
The NodeZero Platform by Ho...
Ranking in Vulnerability Management
7th
Average Rating
8.8
Reviews Sentiment
6.0
Number of Reviews
29
Ranking in other categories
Advanced Threat Protection (ATP) (13th), Penetration Testing Services (1st), Breach and Attack Simulation (BAS) (1st), Risk-Based Vulnerability Management (3rd), AI-Powered Penetration Testing (1st)
 

Mindshare comparison

As of October 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 Vulnerability Management is 2.8%, down from 4.5% compared to the previous year. The mindshare of The NodeZero Platform by Horizon3.ai is 1.4%, up from 1.2% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
The NodeZero Platform by Horizon3.ai1.4%
Qualys TotalCloud1.2%
Tenable Vulnerability Management2.8%
Other94.6%
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.
SR
Information Resources Coordinator - Application at PowerGen
Continuous monitoring has improved OT threat detection and now provides faster, accurate alerts
The best features of Tenable Vulnerability Management include vulnerability scanning, asset discovery, continuous monitoring and alerting, and the ability to report through the dashboard. The dashboard is fully customized towards our environment, and we can use that for our advantage. Out of those features, I find myself relying on the vulnerability scanning the most because it identifies known vulnerabilities and gives us the ability to understand if there is any missing configuration or security configuration. It reduces the exposure to cyber attacks and gives us a detailed view of how the OT environment is functioning. Tenable Vulnerability Management features are great, and the reporting and dashboards are easy and customizable for our environment. The reporting tool gives us immediate information or alerts based on the set parameters that we have within the infrastructure. It gives us a threat level as high, medium, or low, and this can help us to identify or determine if there is any known threat within the environment. The governance and security of Tenable Vulnerability Management is within our control, meaning the user has the power or the authority to work with the AI and to allow the AI to work within your environment in terms of what you want. For instance, the OT environment is something that is very sensitive, and you will not want the AI management tool to take over or to do certain actions within the OT environment. Therefore, as a user, you have control over the AI. Tenable Vulnerability Management provides accuracy and reliable output because it is active, it is real, and it gives updated information. The threats are real based on the alerts that we get, and after reviewing, we are sure that what we see is within our environment and it is accurate.
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.
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Top Industries

By visitors reading reviews
Comms Service Provider
18%
Outsourcing Company
12%
Manufacturing Company
11%
Financial Services Firm
10%
Financial Services Firm
14%
Manufacturing Company
9%
Outsourcing Company
9%
Computer Software Company
7%
Comms Service Provider
9%
Manufacturing Company
9%
Outsourcing Company
8%
Government
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise10
Large Enterprise38
By reviewers
Company SizeCount
Small Business20
Midsize Enterprise4
Large Enterprise22
By reviewers
Company SizeCount
Small Business17
Midsize Enterprise5
Large Enterprise12
 

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...
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 needs improvement with Tenable.io Vulnerability Management?
In my opinion, I would like to see additional functions and improvements. Something related to AI would be a good add...
What advice do you have for others considering Tenable.io Vulnerability Management?
I have purchased a license directly from Tenable, so I am working directly with Tenable and not through partners. My ...
What needs improvement with Horizon3.ai?
In my opinion, The NodeZero Platform by Horizon3.ai could be improved by continuing to add new features, such as clou...
What is your primary use case for Horizon3.ai?
We use The NodeZero Platform by Horizon3.ai to perform pentests for our customers, and we have built services around ...
What advice do you have for others considering Horizon3.ai?
I would actually give The NodeZero Platform by Horizon3.ai a ten out of ten. I am giving it a ten because we have com...
 

Also Known As

Qualys TotalCloud with FlexScan
Tenable.io
Horizon3.ai
 

Overview

 

Sample Customers

Information Not Available
Global Payments AU/NZ
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 Vulnerability Management vs. The NodeZero Platform by Horizon3.ai and other solutions. Updated: September 2026.
917,403 professionals have used our research since 2012.