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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
46th
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 October 2025, in the Vulnerability Management category, the mindshare of Zafran Security is 1.1%, 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 7.7%, down from 11.9% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Market Share Distribution
ProductMarket Share (%)
Tenable Nessus7.7%
Zafran Security1.1%
Skybox Security Suite0.6%
Other90.6%
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

"We saw benefits from Zafran Security almost immediately after deploying it."
"Zafran is an excellent tool."
"We are able to see the real risk of a vulnerability on our environment with our security tools."
"Zafran has become an indispensable tool in our cybersecurity arsenal."
"Overall, we have seen about eighty-seven percent reduction of the number of vulnerabilities that require urgency to remediate, specifically the number of criticals."
"The solution's simplicity of use is its most valuable feature."
"Skybox Security Suite is cost-effective."
"The product's most valuable feature is vulnerability management."
"I think that compliance checks and policy compliance are the product's good features."
"The solution's most valuable and unique assets are the vulnerability management and change management solutions because they identify mistakes in the network before implementation which reduces risks."
"Key features for us include the firewall change audit every week. Also, being able to track firewall ACL usage, so that we can produce semiannual reports on ACL usage and shadowed and redundant rules on the firewall."
"I am impressed with the tool's change management, firewall and network assurance."
"The way that it's built with three-tier architecture, it makes it very horizontally scalable, so I can have multiple fallbacks. If one machine does fall offline, there are four other machines that are doing the exact same job to pick it up"
"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."
"With the Tenable Nessus enterprise edition, you have unlimited licenses to scan the device."
"The most valuable feature is the installation of Tenable which is incredibly easy."
"The features I personally like include host discovery."
"Security is the key number because it can start to scan with a few clicks instead of credits, which is a bit complicated. So simplicity is the first advantage. Then the generated reports are well done and easy to present to management. The quality of the scan is quite good in detecting the severity. The solution has simplicity. Also, it has frequent updates so that is also a valuable feature."
"The features of Tenable Nessus that I have found most valuable are its reliability and its ability to collate a dependable output, where we are able to get the same vulnerability when we test manually. The output is quite reliable."
"The initial setup is very straightforward."
"The most valuable features are that it's fast, it's easy to use and it provides good reports."
 

Cons

"The dashboarding and reporting functionality of Zafran Security is an area that definitely could use some improvements."
"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."
"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."
"The price is costly, and I hope they can reduce the cost."
"The company made bad business decisions impacting many clients and their own staff. Reporting could have been improved, and feature requests often were not implemented."
"The dashboard's UI is not interesting; it is quite normal. It would be better if something more attractive or similar useful information found in AlgoSec was available."
"There is room for improvement in the product's user interface. It could be more user-friendly."
"There is room for improvement in pricing. It would be better, especially if a customer bought all four modules."
"The solution needs to add more automation and orchestration capabilities. Those features would make the solution much stronger."
"Change Manager can be improved. If they can improve Change Manager so that whatever we want to do on a firewall, we are able to do it through Change Manager, it will be helpful for us. Whenever we are doing a change, it only does them at an L3 and L4 level, but all the firewalls are at the application layer. So, whatever needs to be done on the firewall, we aren't able to get it done through Change Manager. Currently, this functionality is not there because of which we are sometimes losing customers. I can create a role on Layer 3, Layer 4, but when it comes to the application layer, such as configuring and defining URLs or other things at the application level, it can't be done through Change Manager. Customers demand that they should be able to do everything through Change Manager. They don't want to do it through some other mechanism to accomplish their complete change management policy. They don't want to use a firewall manager because sometimes, they don't have any manager. They ask if they can use our solution so that a manager is not required. If Change Manager can do all the management automatically without involving any other manager, it will be great. They can also provide better integration with other managers so that everything can be done through a central point."
"The initial setup with Skybox Security is hard. You need one or two strong security engineers on your team."
"In terms of what could be improved, I would say its reporting portion."
"Tenable Nessus application device assessment is one of the top tools. However, in the application security assessment, there are other tools that provide better, and more accurate findings."
"From my point of view the solution basically is not for the big enterprise."
"In Nessus Professional, the main drawback was that we could have a single-user login password. So it could be better in terms of security."
"Tenable Nessus could improve the price."
"Tenable Nessus could improve by having more steady updates which will reduce the vulnerabilities."
"The report for counters is too simple and would be improved by a dashboard."
"The reports are okay, but the interface is a bit difficult to navigate in some cases."
 

Pricing and Cost Advice

Information not available
"The licensing fee is paid yearly and is approximately $100,000."
"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."
"When compared with other companies, the license is more costly."
"The pricing has increased exorbitantly in the last few years, so now it is questionable. Now, it makes me want to review other products."
"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 solution is based on a subscription model for annual licenses."
"The price of the Skybox Security Suite can be expensive."
"I would rate the tool's pricing an eight out of ten."
"When comparing the price of Tenable Nessus to other similar solutions, such as Acunetix, Tenable Nessus is not as expensive. It is averagely priced in the market. We pay for the solution annually."
"The price is reasonable."
"Nessus is affordable, but its licensing model could be improved with more flexibility for adding assets."
"One problem with Tenable is its pricing policy. Optimal results can be achieved with Greenbone Solutions which has much more friendly pricing policies."
"The price of the solution is reasonable."
"It has a fair cost and very good cost-benefit ratio."
"The product is free."
"We incurred a single cost for a perpetual license, although I cannot comment on the price as this is above my management level."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Computer Software Company
9%
Manufacturing Company
8%
Government
6%
Financial Services Firm
18%
Computer Software Company
12%
Manufacturing Company
10%
Energy/Utilities Company
6%
Computer Software Company
12%
Financial Services Firm
10%
Government
10%
Manufacturing Company
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.
868,759 professionals have used our research since 2012.