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Skybox Security Suite vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Mar 15, 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
4.8
Skybox Security Suite offers high ROI for large networks by automating firewall management, saving time and reducing breach costs.
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
 

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
4.1
Skybox Security's support is mixed; responsive but inconsistent, with challenges in engineer availability and multilingual communication.
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
A significant issue was contacting support after hours on the weekends.
Security Engineer at a financial services firm 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
 

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
5.9
Skybox Security Suite excels in scalability for complex environments, though cost and vertical scaling pose challenges for users.
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
One issue I faced with scalability was the transition from Skybox Security Suite's 6500 platform to the 7500 series due to licensing costs becoming prohibitive.
Security Engineer at a financial services firm 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
 

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
7.3
Skybox Security Suite is seen as stable, with occasional VM issues and praised responsive support, varying stability ratings.
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
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.
Skybox Security Suite requires improvements in UI, web access, reporting, integration, pricing, support, cloud connectivity, and data processing.
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
Reporting could have been improved, and feature requests often were not implemented.
Security Engineer at a financial services firm with 10,001+ employees
Only the licensing part of Skybox had an edge. We were not renewing the licenses of Skybox every year, but in the case of other tools, we would have to renew if we wanted to use those tools.
Security Architect at a tech vendor with 5,001-10,000 employees
It would be better if something more attractive or similar useful information found in AlgoSec was available.
Software Engineer at LTI - Larsen & Toubro Infotech
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.
Skybox Security Suite pricing has mixed reviews, seen as cost-effective by some, but expensive due to varied licensing models.
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
From a commercial perspective, AlgoSec is more expensive compared to Skybox Security Suite.
Software Engineer at LTI - Larsen & Toubro Infotech
The pricing became prohibitive when transitioning between the 6500 and 7500 series models.
Security Engineer at a financial services firm 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
 

Valuable Features

Qualys TotalCloud offers comprehensive vulnerability detection, cloud security management, and automation with insightful dashboards for efficient threat management.
Skybox Security Suite offers comprehensive security management with key features like scalability, integration, and user-friendly dashboards for large enterprises.
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
The tool successfully helped in preventing vulnerabilities and breaches.
Security Engineer at a financial services firm with 10,001+ employees
Skybox Security Suite's network modeling and path analysis is a good feature when we need to check regarding the connectivity.
Security Architect at a tech vendor with 5,001-10,000 employees
The most helpful feature is the firewall analyzer.
Software Engineer at LTI - Larsen & Toubro Infotech
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 (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)
Skybox Security Suite
Ranking in Vulnerability Management
53rd
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
38
Ranking in other categories
Firewall Security Management (8th)
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 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 Skybox Security Suite is 0.7%, up from 0.4% compared to the previous year. The mindshare of Tenable Nessus is 4.1%, down from 9.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Mindshare Distribution
ProductMindshare (%)
Tenable Nessus4.1%
Qualys TotalCloud1.0%
Skybox Security Suite0.7%
Other94.2%
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.
AnoopBhat - PeerSpot reviewer
Security Architect at a tech vendor with 5,001-10,000 employees
Firewall policy management has improved access control but still needs simpler setup and upgrades
The features that I appreciated the most in Skybox Security Suite were not comparable with Tufin, as Tufin was far ahead in terms of the technology and the user interface. The effectiveness of the vulnerability management in Skybox Security Suite is an area I have not used that much. The firewall management feature has streamlined rule configuration and compliance in Skybox Security Suite and has evolved over time, but Tufin is far better. In terms of comparison between both tools, only the licensing part of Skybox had an edge. We were not renewing the licenses of Skybox every year, but in the case of other tools, we would have to renew if we wanted to use those tools. The disadvantages and weaknesses of Skybox Security Suite include the interface, complexity with setup, and upgrading. There are some smaller issues as well that would take more time to discuss, but there are ways around them. We use this tool to implement a new policy on the firewall by going to Skybox, creating a flow there, and then using an approval mechanism in place. There are two different levels of approvals which we have to go through, and once both approvers approve the request, we are ready to implement it. A specific challenge is that if we have to create a new object group and place ten different objects in that and use that object group in two different rules, we have to create the object group in the first rule and add the ten new objects. Then if we have to create another rule, we do not get an option to recall or reuse that same group which we created in the previous rule. We have to create a new object group again and then add the objects into it again. If we had created an object group once, we should have gotten an option to recall that or call that object group in the new rule, and that should have made the process easier.
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
Financial Services Firm
16%
Computer Software Company
9%
Manufacturing Company
9%
Government
8%
Financial Services Firm
17%
Manufacturing Company
11%
Computer Software Company
9%
Comms Service Provider
6%
Financial Services Firm
10%
Manufacturing Company
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 Enterprise28
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise4
Large Enterprise21
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 Skybox Security Suite?
From a commercial perspective, AlgoSec is more expensive compared to Skybox Security Suite. Skybox Security Suite is ...
What needs improvement with Skybox Security Suite?
The features that I appreciated the most in Skybox Security Suite were not comparable with Tufin, as Tufin was far ah...
What is your primary use case for Skybox Security Suite?
Skybox Security Suite is primarily used for allowing access on firewalls and getting the access to allow some connect...
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
No data available
No data available
 

Overview

 

Sample Customers

Information Not Available
ADP, Blue Cross Blue Shield, BT, USAID, Delta Dental, EDF Energy, EMC, HSBC, Johnson & Johnson
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
Find out what your peers are saying about Skybox Security Suite vs. Tenable Nessus and other solutions. Updated: April 2026.
896,099 professionals have used our research since 2012.