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The NodeZero Platform by Horizon3.ai vs Vicarius vRx 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
5.3
Qualys TotalCloud enhances efficiency and automation, achieving up to 40% cost savings and over 50% improved asset scanning.
Sentiment score
3.8
NodeZero Platform cuts pen testing costs, enhances efficiency, and boosts ROI with proactive issue detection and continuous scanning.
Sentiment score
8.1
MSPs and clients achieved significant time, cost, and efficiency gains with Vicarius vRx, realizing a 40% ROI.
We are able to scan all our assets with less human intervention and achieve overall effective outcomes.
Dns architect at a tech consulting company with 1,001-5,000 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
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
6.7
Qualys TotalCloud's customer service is praised for responsiveness despite occasional delays, with ratings from seven to ten.
Sentiment score
7.1
NodeZero Platform's customer service is praised for responsiveness, knowledge, and effective problem resolution, receiving high satisfaction ratings.
Sentiment score
8.0
Vicarius vRx customer service is praised for responsiveness, professionalism, and effectiveness, with high ratings and efficient communication.
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
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
Their support is very good, and they respond quickly.
Network & Security Manager at a government with 201-500 employees
During the POC and the implementation, they were very available and made their best efforts to help us.
DevOps Tech Lead at Earnix Ltd.
Whenever I've contacted them, they respond promptly with a callback or by email.
Systems Admin at a computer software company with 201-500 employees
 

Scalability Issues

Sentiment score
7.4
Qualys TotalCloud is highly scalable and adaptable, efficiently supporting varied environments and large-scale deployments with robust performance.
Sentiment score
7.2
NodeZero Platform by Horizon3.ai efficiently scales for varied environments, seamlessly deploying tests and handling substantial assets but licensing limits exist.
Sentiment score
7.8
Vicarius vRx scales well, featuring easy deployment across endpoints, but some face challenges during large system updates.
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
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
It is very simple; you just script it, and then the computers connect themselves.
Information Systems Supervisor at a manufacturing company with 11-50 employees
When we attempted to scale this and update 200 systems, that just locked it.
Works at a manufacturing company with 51-200 employees
We have some clients with up to a thousand agents.
Network & Security Manager at a government with 201-500 employees
 

Stability Issues

Sentiment score
8.4
Qualys TotalCloud is stable and reliable, offering 99.9% uptime with quick support for minor issues and transparent maintenance updates.
Sentiment score
8.3
NodeZero by Horizon3.ai offers reliable performance, minimal downtime, and robust operational reliability with occasional user-side technical challenges.
Sentiment score
7.3
Users generally find Vicarius vRx stable and efficient, despite occasional deployment challenges and update-related high CPU usage.
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
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
There are some issues that they do not even know how to fix at this point.
Works at a manufacturing company with 51-200 employees
I would rate the stability of Vicarius vRx ten out of ten.
Information Security Manager at Pango
There are some issues like high CPU usage during updates, but these were fixed.
IT Manager & Sys Admin at a non-tech company with 51-200 employees
 

Room For Improvement

Qualys TotalCloud requires UI improvements, better cloud integration, enhanced support, and optimized reporting, onboarding, and vulnerability detection.
NodeZero Platform needs enhancements in mapping, reporting, integration, audit logs, training, setup, costs, and automated vulnerability solutions.
Vicarius vRx needs improved automation, simplified login, better integration, UI, and advanced management features for enhanced user experience.
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
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
I am pretty sure that the tool works great when it comes to Windows, but when you are in an environment that has different flavors of Linux at different version levels, that may pose an issue.
Works at a manufacturing company with 51-200 employees
We have the ability to search across the network for all switches, routers, and printers, but some devices might be outdated and have vulnerabilities.
Network & Security Manager at a government with 201-500 employees
Enhancing Vicarius vRx with improved third-party integrations, like notifications for external systems, and increased cloud integration for richer instance information, would be valuable improvements.
DevOps Tech Lead at Earnix Ltd.
 

Setup Cost

Qualys TotalCloud is costly but justified for large companies due to features, flexibility, and VMware integration efficiencies.
Enterprise users find Horizon3.ai's NodeZero Platform cost-effective and stable, offering competitive pricing compared to traditional pen tests.
Vicarius vRx offers scalable per-asset pricing, competitive yet costly, with negotiable rates appealing to resellers but challenging for smaller entities.
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 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
It was very cheap.
Works at a manufacturing company with 51-200 employees
In the past, Vicarius vRx was cheap, but now they have adjusted their pricing policy, resulting in higher renewal costs.
Network & Security Manager at a government with 201-500 employees
From a pricing perspective, Vicarius was cheaper compared to other competitors.
DevOps Tech Lead at Earnix Ltd.
 

Valuable Features

Qualys TotalCloud offers efficient asset discovery, security posture management, and vulnerability management with excellent integration and threat intelligence features.
NodeZero Platform enhances security by offering scalable automation, vulnerability prioritization, real attack simulations, and comprehensive threat understanding.
Vicarius vRx offers automated patching, vulnerability management, and a user-friendly interface, greatly reducing manual tasks for IT teams.
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
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
It's a valuable tool that reduces tension between IT and security teams by providing time to properly install patches.
Information Security Manager at Pango
The system prioritizes vulnerabilities, identifying high, medium, and low risks, allowing us to focus on high-risk applications.
Information Systems Supervisor at a manufacturing company with 11-50 employees
The most valuable feature is the system's ability to provide information about open CVEs and how it compares the local version with available updates.
IT Manager & Sys Admin at a non-tech company with 51-200 employees
 

Categories and Ranking

Qualys TotalCloud
Sponsored
Ranking in Vulnerability Management
11th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
46
Ranking in other categories
Container Security (11th), Cloud Workload Protection Platforms (CWPP) (8th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (2nd), Cloud-Native Application Protection Platforms (CNAPP) (7th)
The NodeZero Platform by Ho...
Ranking in Vulnerability Management
9th
Average Rating
8.8
Reviews Sentiment
6.0
Number of Reviews
28
Ranking in other categories
Advanced Threat Protection (ATP) (14th), Penetration Testing Services (1st), Breach and Attack Simulation (BAS) (1st), Risk-Based Vulnerability Management (2nd), AI-Powered Penetration Testing (1st)
Vicarius vRx
Ranking in Vulnerability Management
31st
Average Rating
8.0
Reviews Sentiment
7.6
Number of Reviews
21
Ranking in other categories
Patch Management (9th), Risk-Based Vulnerability Management (11th)
 

Mindshare comparison

As of September 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 The NodeZero Platform by Horizon3.ai is 1.3%, up from 1.1% compared to the previous year. The mindshare of Vicarius vRx is 0.9%, up from 0.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
The NodeZero Platform by Horizon3.ai1.3%
Qualys TotalCloud1.2%
Vicarius vRx0.9%
Other96.6%
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.
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.
OrenBen Shalom - PeerSpot reviewer
Information Security Manager at Pango
Consolidates vulnerability discovery, prioritization, and remediation in a single platform
Vicarius vRx offers several advantages, especially for organizations with diverse operating systems and applications requiring frequent patching. The platform helps prioritize patch installation by identifying high-risk vulnerabilities, allowing IT teams to focus on critical threats first. This prioritization is crucial because it prevents IT teams from being overwhelmed by the constant influx of patches, enabling them to create a manageable plan and allocate resources effectively. By distinguishing between critical, high-risk, and medium-risk vulnerabilities, Vicarius vRx empowers IT teams to address the most urgent threats promptly and schedule less critical patches for later. Both native operating system updates and Vicarius vRx offer vulnerability remediation. Native OS updates allow for the patching of system vulnerabilities on Windows, macOS, and Linux. However, Vicarius vRx provides a single solution for installing both operating system and application updates by also discovering application vulnerabilities. Another valuable feature is virtual patching, which allows us to protect an asset from a specific vulnerability without installing a patch. Sometimes, installing a patch alone is insufficient and requires restarting the asset. However, production servers often cannot be restarted during the day, restricting restarts to specific timeslots. Virtual patching creates a network-based protection layer that prevents exploitation of a vulnerability, offering a temporary safeguard. While not a foolproof solution for long-term use, it's a valuable tool that reduces tension between IT and security teams by providing time to properly install patches.
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Top Industries

By visitors reading reviews
Comms Service Provider
16%
Outsourcing Company
12%
Manufacturing Company
11%
Financial Services Firm
10%
Comms Service Provider
9%
Manufacturing Company
8%
Outsourcing Company
8%
Government
7%
Computer Software Company
12%
Non Profit
11%
Financial Services Firm
9%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business14
Midsize Enterprise5
Large Enterprise34
By reviewers
Company SizeCount
Small Business16
Midsize Enterprise5
Large Enterprise12
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise7
Large Enterprise3
 

Questions from the Community

What needs improvement with Qualys TotalCloud?
In terms of improvement, remediation still belongs to the cloud team, which is one of the issues we faced with Qualys...
What is your primary use case for Qualys TotalCloud?
My main use case for Qualys TotalCloud is regarding the cloud visibility that we were not having previously. Previous...
What needs improvement with Horizon3.ai?
The NodeZero Platform by Horizon3.ai could be improved if automated fixes could be implemented, which would be fantas...
What is your primary use case for Horizon3.ai?
My main use case for The NodeZero Platform by Horizon3.ai is penetration testing for cybersecurity. A specific exampl...
What advice do you have for others considering Horizon3.ai?
The NodeZero Platform by Horizon3.ai's AI capabilities demonstrate very good governance and security, which I like ve...
What is your experience regarding pricing and costs for Vicarius vRx?
I do not use other solutions, so I cannot compare its pricing to others, but its price seems okay.
What needs improvement with Vicarius vRx?
I would be happy if the patch update could be downloaded to the Vicarius server and then implemented on the client. C...
What is your primary use case for Vicarius vRx?
We use Vicarius vRx to manage all third-party software updates. Previously, we could manage Windows updates, but thir...
 

Also Known As

Qualys TotalCloud with FlexScan
Horizon3.ai
No data available
 

Overview

 

Sample Customers

Information Not Available
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.
Information Not Available
Find out what your peers are saying about The NodeZero Platform by Horizon3.ai vs. Vicarius vRx and other solutions. Updated: September 2026.
913,806 professionals have used our research since 2012.