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FortiCNAPP vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Feb 22, 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
5.8
FortiCNAPP enhances security and efficiency by automating tasks, reducing staff needs, and optimizing roles within the Fortinet ecosystem.
Sentiment score
3.0
Tenable Nessus boosts security by enhancing threat visibility, reducing vulnerabilities, saving costs, and achieving high user satisfaction.
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
FortiCNAPP is a competitive and robust solution, the only one in the IT sphere that addresses all quadrants in the Gartner Quadrants.
Client Manager at MLL Telecom Ltd
They need fewer employees from a SOC perspective where people are deployed in their SOC, as well as significant time saved.
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
 

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
7.9
FortiCNAPP support is proactive, responsive, values customer input, and receives high satisfaction despite occasional delays in issue resolution.
Sentiment score
3.9
Tenable Nessus support is praised for responsiveness and efficiency, with mixed feedback on response times and depth for advanced queries.
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
My technical teams do utilize integration with DevOps tools, as it performs significantly with automation regarding sophisticated challenges.
Client Manager at MLL Telecom Ltd
Fortinet's technical support is definitely helpful and responsive.
Owner at IT CARE
Technical support from Fortinet is good; I get feedback and responses quickly.
Software Engineer at a university with 5,001-10,000 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
 

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
6.6
FortiCNAPP is praised for scalability across cloud platforms with some concerns about resource limitations in large environments.
Sentiment score
5.2
Tenable Nessus is scalable and flexible for most organizations but may face limitations with very large enterprises.
We started our organization about nine months back. We started with about 30 users, and we now have more than 100 users.
CIO at a venture capital & private equity firm with 11-50 employees
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
For complex large customers, global deployments, or large public sector customers, the process can take longer.
Client Manager at MLL Telecom Ltd
It can handle growing workloads or expanding environments smoothly.
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
FortiCNAPP's scalability is open, and we can change instances easily as needed.
DGM at Airtel Digital
Whether managing 50 servers today or 500 tomorrow, performance or capacity are not hindered.
SOC Engineer at a outsourcing company with 10,001+ employees
Tenable Nessus is definitely scalable, especially for license formats designed for scalability.
Security Center Coordinator at a comms service provider with 1-10 employees
 

Stability Issues

Sentiment score
8.3
Qualys TotalCloud is highly stable with reliable support, 99.9% uptime, minimal bugs, and effective maintenance communication.
Sentiment score
7.6
Users find FortiCNAPP stable and reliable, appreciating its timely threat response, regular updates, and strong technical support.
Sentiment score
5.8
Tenable Nessus is praised for stability and reliability, with high user satisfaction despite minor setup and update issues.
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
They respond within the service level agreements and are proactive in their approach.
Client Manager at MLL Telecom Ltd
I have not experienced any downtime or issues reported by my clients.
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
We have not encountered any issues with missing network items or errors in API and webhook interactions.
SOC Engineer at a outsourcing company with 10,001+ employees
The stability of Tenable Nessus is extraordinary.
Founder at Cipheroot
 

Room For Improvement

Users suggest enhancing Qualys TotalCloud with clearer reports, better integration, intuitive UI, AI risk assessments, and improved documentation.
FortiCNAPP needs better alert configuration, UI intuitiveness, seamless integration, scalability, customization, and enhanced compliance and visibility features.
Tenable Nessus requires enhanced reporting, better integration, modern UI, faster scans, accurate detection, and comprehensive IT asset coverage.
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
The vulnerability part is not systematically organized; it is all clumsy in the web UI, and it is not user-friendly.
Software Engineer at a university with 5,001-10,000 employees
The solution could be more user-friendly and intuitive.
Client Manager at MLL Telecom Ltd
Reporting and alert configurations might require time to tune properly.
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
This is Tenable's property. They want to sell Tenable Security Center, and they closed all the API capability for Tenable Nessus Professional.
Co-Founder at RSU Consultancy
An AI feature that helps them discover options without requiring them to deep dive into all features or guides them through advisory functions would be beneficial.
Freelancer And CEO at a tech vendor with 1-10 employees
The documentation is not well-organized, which can be confusing when searching for solutions or specific information related to Tenable Nessus Professional.
SOC Engineer at a outsourcing company with 10,001+ employees
 

Setup Cost

Qualys TotalCloud's pricing is high yet justified by comprehensive features and flexibility, benefiting larger enterprises seeking robust security.
FortiCNAPP offers affordable, flexible licensing with a pay-as-you-go model, starting at $80,000, appealing to early adopters.
Tenable Nessus is valued for affordability and flexibility, though costs vary by organization size, IP count, and region.
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 a mediator compared to other products; it is not that much higher and not much lower than other products, making it a very affordable price.
Owner at IT CARE
FortiCNAPP is not a cheap solution, and licensing around it can become very expensive for specific customers.
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
Regarding pricing, setup cost, and licensing, since it's a marketplace, I find the pay-as-you-go model convenient and fair.
DGM at Airtel Digital
The pricing for Tenable Nessus has increased significantly, tripling over the last few years.
Security Center Coordinator at a comms service provider with 1-10 employees
Tenable Nessus's pricing is adequate if it is fully utilized.
SOC Engineer at a outsourcing company with 10,001+ employees
When we compare it to other solutions, it is more difficult for us to negotiate the price for Tenable Nessus than to negotiate the price with Rapid7.
Freelancer And CEO at a tech vendor with 1-10 employees
 

Valuable Features

Qualys TotalCloud offers comprehensive vulnerability detection, cloud security management, and automation with insightful dashboards for efficient threat management.
FortiCNAPP enhances security with compliance reporting, threat detection, automated responses, and easy integration, reducing alert noise.
Tenable Nessus excels in vulnerability detection, user-friendliness, scalability, real-time monitoring, integration, compliance reporting, and remediation advice.
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
It functions as a proactive tool, enabling me to identify threats quickly and automate responses.
Client Manager at MLL Telecom Ltd
Automated policy recommendations with this solution do help to improve security.
Senior Sales Account Manager at Hard2bit Cybersecurity
Compliance reporting that supports frameworks such as PCI, SOC 2, and CIS is a game changer.
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
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
The scanning and reporting features are the most valuable aspects of Tenable Nessus.
SOC Engineer at a outsourcing company with 10,001+ employees
The most valuable features of Tenable Nessus include its ease of access and quick usability.
Security Center Coordinator at a comms service provider with 1-10 employees
 

Categories and Ranking

Qualys TotalCloud
Sponsored
Ranking in Vulnerability Management
11th
Average Rating
8.6
Reviews Sentiment
7.3
Number of Reviews
39
Ranking in other categories
Container Security (11th), Cloud Workload Protection Platforms (CWPP) (8th), Cloud Security Posture Management (CSPM) (8th), SaaS Security Posture Management (SSPM) (1st), Cloud-Native Application Protection Platforms (CNAPP) (6th)
FortiCNAPP
Ranking in Vulnerability Management
33rd
Average Rating
8.4
Reviews Sentiment
6.8
Number of Reviews
16
Ranking in other categories
Container Security (26th), Cloud Workload Protection Platforms (CWPP) (17th), Cloud Security Posture Management (CSPM) (21st), Cloud-Native Application Protection Platforms (CNAPP) (17th), Compliance Management (10th)
Tenable Nessus
Ranking in Vulnerability Management
2nd
Average Rating
8.4
Reviews Sentiment
6.0
Number of Reviews
88
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of June 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 FortiCNAPP is 1.8%, up from 1.2% compared to the previous year. The mindshare of Tenable Nessus is 3.8%, down from 9.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Tenable Nessus3.8%
Qualys TotalCloud1.0%
FortiCNAPP1.8%
Other93.4%
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.
Charl Pinches - PeerSpot reviewer
Solutions Sales Specialist at a outsourcing company with 1,001-5,000 employees
Cloud risk has become visible and security teams prioritize and act on threats efficiently
FortiCNAPP can be improved because the platform can feel complex at the start, especially for teams new to CNAP tooling. Some users mention that they found the interface and data models less intuitive than expected, and I have had situations where reporting and alert configurations might require time. Regarding other improvements needed for FortiCNAPP, the majority of the time is that reporting and alert configuration might require time to tune properly. This is the significant issue, combined with the fact that some users find the interface and data model less intuitive than expected. Regarding FortiCNAPP's AI capabilities, I think there might be a bit of improvement needed. However, since Fortinet is a security vendor overall, keeping the data safe is not a problem. I know they have invested a lot in getting it to a place where it is a trusted platform.
MohammedJaffir - PeerSpot reviewer
Founder at Cipheroot
Has enabled me to reduce false positives and perform deep credential auditing with seamless integrations
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. Regarding integration capabilities, we can integrate Tenable Nessus with SIM tools such as Splunk, IBM QRadar, and Azure Sentinel, as well as with ticketing systems such as ServiceNow, Jira, and Slack. There is no complexity as it is very easy to integrate everything. In terms of the reporting feature, while vulnerability scanning can throw some false positives, Tenable Nessus has very few, achieving a reduction of 75% to 80% false positives with manual analysis needed. We can generate standard Nessus reports that typically include host summaries and vulnerabilities by host and plugin, alongside solutions and remediation recommendations. The main benefits I get from Tenable Nessus are complete asset inventory and comprehensive attack surface management, allowing us to prioritize vulnerabilities based on risk, focusing on true risk and threat path analysis.
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Top Industries

By visitors reading reviews
Manufacturing Company
17%
Financial Services Firm
14%
Construction Company
8%
Comms Service Provider
7%
Financial Services Firm
9%
Computer Software Company
9%
Construction Company
8%
Manufacturing Company
6%
Manufacturing Company
10%
Financial Services Firm
10%
Government
9%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business10
Midsize Enterprise3
Large Enterprise29
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise5
Large Enterprise7
By reviewers
Company SizeCount
Small Business40
Midsize Enterprise19
Large Enterprise35
 

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 Lacework?
The pricing is a mediator compared to other products; it is not that much higher and not much lower than other produc...
What needs improvement with Lacework?
When considering improvements for FortiCNAPP, I think there could be enhancements regarding the license, possibly add...
What is your primary use case for Lacework?
Deploying FortiCNAPP is easy for us because our technicians know FortiGate, which is the solution, and they are famil...
How would you choose between Rapid7 InsightVM and Tenable Nessus?
You have full visibility across cloud, network, virtual, and containerized infrastructures with Rapid7 Insight VM. Yo...
What's the difference between Tenable Nessus and Tenable.io Vulnerability Management?
Tenable Nessus is a vulnerability assessment solution that is both easy to deploy and easy to manage. The design of ...
What is your experience regarding pricing and costs for Tenable Nessus?
Based on my experience, the pricing for Tenable Nessus is somewhat higher, but customers still want to pay for it, so...
 

Also Known As

Qualys TotalCloud with FlexScan
Polygraph, FortiCNP, Lacework
No data available
 

Overview

 

Sample Customers

Information Not Available
J.Crew, AdRoll, Snowflake, VMWare, Iterable, Pure Storage, TrueCar, NerdWallet, and more.
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
Find out what your peers are saying about FortiCNAPP vs. Tenable Nessus and other solutions. Updated: June 2026.
902,495 professionals have used our research since 2012.