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Skybox Security Suite vs Tenable Nessus comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Sep 7, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Zafran Security
Sponsored
Ranking in Vulnerability Management
16th
Average Rating
9.6
Reviews Sentiment
7.8
Number of Reviews
6
Ranking in other categories
Continuous Threat Exposure Management (CTEM) (1st)
Skybox Security Suite
Ranking in Vulnerability Management
44th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
37
Ranking in other categories
Firewall Security Management (7th)
Tenable Nessus
Ranking in Vulnerability Management
1st
Average Rating
8.4
Reviews Sentiment
6.0
Number of Reviews
86
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of September 2025, in the Vulnerability Management category, the mindshare of Zafran Security is 1.0%, up from 0.1% compared to the previous year. The mindshare of Skybox Security Suite is 0.6%, up from 0.5% compared to the previous year. The mindshare of Tenable Nessus is 8.0%, down from 12.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Market Share Distribution
ProductMarket Share (%)
Tenable Nessus8.0%
Zafran Security1.0%
Skybox Security Suite0.6%
Other90.4%
Vulnerability Management
 

Featured Reviews

Israel Cavazos Landini - PeerSpot reviewer
Weekly insights and risk analysis facilitate informed security decisions
I appreciate the weekly insights Zafran provides, which include critical topics for networks and IT security, allowing us to evaluate which insights apply to our environment. The organization score feature is valuable to keep the leadership team updated on how our infrastructure fares security-wise. The applicable risk level versus base risk level feature is beneficial because prior to Zafran, we only used the base risk level, but now understand that risk depends on the asset itself. Zafran is an excellent tool.
NenadMijatovic - PeerSpot reviewer
Efficient in vulnerability management, stable and easy to use
Vulnerability management is the most valuable feature because it lets you focus on the most critical vulnerabilities. That's the important thing. Here in Serbia, there are not so many companies that have too many firewalls inside one company. So, they usually don't buy this model for Firewall Assurance unless there is some compliance. So you can prove that your firewalls are compliant. So, that model is not so important here in Serbia. It's for bigger companies. So, they usually buy network assurance to build the model of the network and vulnerability management to focus on the most important vulnerabilities. Moreover, Skybox can collect data for many vendors. From the endpoint protection vendors to the network equipment vendors to other security vendors. So, it supports more than one hundred vendors to collect data from them.
HarshBhardiya - PeerSpot reviewer
Provided increased visibility across the organization's servers
The user interface of Tenable Nessus feels outdated and could be more user-friendly. Additionally, the documentation is not well-organized, which can be confusing when searching for solutions or specific information related to Tenable Nessus Professional. The reporting feature could be improved by allowing users to create their own templates instead of relying on predefined ones.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Zafran has become an indispensable tool in our cybersecurity arsenal."
"We saw benefits from Zafran Security almost immediately after deploying it."
"We are able to see the real risk of a vulnerability on our environment with our security tools."
"Overall, we have seen about eighty-seven percent reduction of the number of vulnerabilities that require urgency to remediate, specifically the number of criticals."
"Zafran is an excellent tool."
"Robust modules can be used for different parts of network security."
"I am impressed with the tool's change management, firewall and network assurance."
"Correlates logs and threats and prioritizes; provides network maps;p provides change result context and resulting vulnerability."
"This type of tool does a great job of reaching into those other devices producing risk recommendations, compliance recommendations, and a single plane of glass to do your queries, so you can find where these rules might exist."
"The product's most valuable feature is vulnerability management."
"instead of asking for firewall rules which may or may not be relevant, or could already be there, or could be over-permissioned, Skybox can be used to map out the resources that that application is going to use and provide the exact rules that an application would require to function correctly. If the traffic isn't able to flow for the application, if it's erring out, Skybox can be used to troubleshoot that and say, "All right, where is the traffic being stopped and why, and how do I fix that.""
"Overall, the tool has helped us reduce risks. If any step is missing, it's easier for my team or engineers to identify it. The tool provides accurate recommendations based on the data. Its integration is easy, and I have integrated it with Fortinet firewalls."
"It's given us more visibility in terms of what are the kinds of configurations that are on these devices, and how many of these are stale rules. So it's helped greatly in terms of cleaning up of rules, for sure. And it has definitely given us a more secure way of backing up the configuration on these devices."
"The ease of use is the primary valuable feature. This specific version is very straightforward. I like the ability to modify it and configure it based on the different policies."
"The initial setup is very straightforward."
"Tenable Nessus has provided increased visibility across the organization's servers."
"The most valuable features of Tenable Nessus are the scanning option. Advanced scanning is highly useful. The offline config audits and application assessments are useful."
"The most valuable feature is the breadth of vulnerabilities that it finds. It's able to find across a lot of different platforms and operating systems. It's also able to combine local testing with network-based testing."
"The scanning and reporting features are the most valuable aspects of Tenable Nessus."
"The automatic scanner and scheduler are pretty cool."
"The trial version is very good for testing whether it will suit your needs."
 

Cons

"The dashboarding and reporting functionality of Zafran Security is an area that definitely could use some improvements."
"I think the ability to have some enhanced reporting capabilities is something they can improve on, as they have good reports but we have asked for some specific reporting enhancements."
"Initially, we were somewhat concerned about the scalability of Zafran due to our large asset count and the substantial amount of information we needed to process."
"The solution does not support certain devices or vendors in some regions or countries due to regulations."
"The primary room for improvement would be to enable a web interface, which is not something which is there in the product. This is supposed to have come a year, a year and a half ago, but still has failed to come out. It still needs a client application to be installed on a workstation to be able to access that server and then run these reports. So I cannot extend that access to anybody. It has to be one administrator all the time. So unlike a web interface, where you can give multiple users simultaneous access and generate the various reports, that isn't a possibility at the moment."
"The most recent update was not tested with all of the vendors before it was released, so some of the features are misbehaving."
"It's expensive."
"They are not satisfied with the complexity of the solution and the price."
"The only place where Skybox has room for improvement, and they're working on releasing this, it's just a slow-go, is the UI. The user interface has historically been via a locally installed thick client. They are moving to a web-based console and it's slowly coming out."
"The tool does not offer options for customization."
"There is room for improvement in pricing. It would be better, especially if a customer bought all four modules."
"We use credentialed scans. They need more permissions and more changes or settings on Windows and Linux."
"Online learning could be a bit better."
"The product must be more comprehensive."
"One area that has room for improvement is the reporting. I'm preparing reports for Windows and Linux machines, etc. Currently, I'm collecting three or four reports and turning them into one report. I don't know if it is possible to combine all of them in one report, but that would be helpful."
"They have added a new Tenable Nessus Expert. That is their new product, which caters to the cloud and everything else. I am assuming that the new features and product enhancements are based on that tool set, but we haven't reviewed it yet."
"EQA's and dashboards should be addressed in the next release."
"Tenable Nessus could improve the reporting by adding some dashboards. The reports are a hassle at this time. Tenable.io has more detailed reports. Having a better dashboard that can show where the vulnerabilities are and be categorized would be helpful. We then could present them to upper management for a deep overview of our network posture which they do not see."
"They should improve the I/O reporting and the customized spreadsheet export feature."
 

Pricing and Cost Advice

Information not available
"The pricing is high, and the licensing model needs more flexibility."
"I think for the cost, what we got definitely is worth it. The only caution I would give is that whenever you license for Firewall Assurance at the same time, for some weird reason, you have to get one Network Assurance license, just to manage one firewall. That's a little bit of overkill. But otherwise, in general, the pricing is fairly okay."
"When compared with other companies, the license is more costly."
"I would rate the tool's pricing an eight out of ten."
"The software is expensive. I rate its pricing an eight out of ten."
"Licensing is normally on a yearly basis. There may also be a perpetual license. Normally, the customers ask for a lower price. If you want to sell more, you have to think about it."
"Skybox Security Suite has indeed helped us reduce costs. The prices of AlgoSec and Skybox Security Suite are approximately 50 percent different. The tool may require special vendor support from abroad, resulting in slightly higher costs. Its pricing is in the middle."
"The product's pricing is excellent value. In terms of licensing, make sure you understand your network components, all your hops through your network, thoroughly, before you decide on the total cost. If you want to do point-to-point flow analysis and such, you need to have the configuration of all the devices in between point A and point B. A lot of people don't realize all their network components until they start using this product."
"The price of the solution is reasonable."
"We pay approximately $2,500 on a yearly basis."
"We have a subscription, the licensing fees are paid yearly, and I am using the latest version."
"While Tenable Nessus is a good enterprise solution, the high price would likely make it prohibitive to smaller organizations."
"The solution is expensive."
"We paid about six thousand dollars per license."
"Its price is high for Libya. The companies here in Libya don't have the awareness of and a good budget for cybersecurity services. If you want them to go for a product, you need to provide something different. This differentiation is related to the price. They should give about 40% to 45% discount per person on the current cost."
"The price of the solution is reasonable."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Computer Software Company
10%
Manufacturing Company
7%
Government
6%
Financial Services Firm
18%
Computer Software Company
12%
Manufacturing Company
10%
Energy/Utilities Company
6%
Computer Software Company
12%
Financial Services Firm
11%
Manufacturing Company
10%
Government
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business21
Midsize Enterprise4
Large Enterprise20
By reviewers
Company SizeCount
Small Business38
Midsize Enterprise19
Large Enterprise35
 

Questions from the Community

What is your experience regarding pricing and costs for Zafran Security?
Since we stood Zafran Security up in our private cloud, we handle the maintenance on our side. As we opted not to use...
What needs improvement with Zafran Security?
In terms of areas for improvement, Zafran Security is doing a really great job as a new and emerging company. Oftenti...
What is your primary use case for Zafran Security?
My use cases for Zafran Security revolve around two primary areas. One is around vulnerability management and priorit...
What do you like most about Skybox Security Suite?
Overall, the tool has helped us reduce risks. If any step is missing, it's easier for my team or engineers to identif...
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 dashboard's UI is not interesting; it is quite normal. It would be better if something more attractive or similar...
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 do you like most about Tenable Nessus?
We have around 500 virtual machines. Therefore, we conduct monthly scans and open tickets for our developers to addre...
 

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: September 2025.
867,676 professionals have used our research since 2012.