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Tenable Nessus vs The NodeZero Platform by Horizon3.ai comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Nov 3, 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
17th
Average Rating
9.6
Reviews Sentiment
7.8
Number of Reviews
6
Ranking in other categories
Continuous Threat Exposure Management (CTEM) (1st)
Tenable Nessus
Ranking in Vulnerability Management
1st
Average Rating
8.4
Reviews Sentiment
6.0
Number of Reviews
87
Ranking in other categories
No ranking in other categories
The NodeZero Platform by Ho...
Ranking in Vulnerability Management
11th
Average Rating
9.0
Reviews Sentiment
5.7
Number of Reviews
11
Ranking in other categories
Penetration Testing Services (1st), Breach and Attack Simulation (BAS) (2nd)
 

Mindshare comparison

As of November 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 Tenable Nessus is 6.6%, down from 10.9% compared to the previous year. The mindshare of The NodeZero Platform by Horizon3.ai is 1.2%, up from 1.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Vulnerability Management Market Share Distribution
ProductMarket Share (%)
Tenable Nessus6.6%
The NodeZero Platform1.2%
Zafran Security1.1%
Other91.1%
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.
MohammedJaffir - PeerSpot reviewer
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.
Brian W. - PeerSpot reviewer
Effectively prioritizes vulnerabilities and has been one of the most transformative technologies
Prioritization is really key; it's a massive differentiator. The prioritization aspect is crucial. The ability to capture or crack credentials and then use that to move laterally and identify additional vulnerabilities is significant. Their password-cracking capability is a distinct function that is very helpful. Additionally, 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. That's a huge benefit. Also, the fact that they provide fixes alongside all their identified vulnerabilities means you don’t have to search for fixes yourself. They give you specific actions to take, which is incredibly helpful and saves a lot of time.

Quotes from Members

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

Pros

"Zafran is an excellent tool."
"Overall, we have seen about eighty-seven percent reduction of the number of vulnerabilities that require urgency to remediate, specifically the number of criticals."
"We saw benefits from Zafran Security almost immediately after deploying it."
"Zafran has become an indispensable tool in our cybersecurity arsenal."
"We are able to see the real risk of a vulnerability on our environment with our security tools."
"The features I personally like include host discovery."
"I find the features that are most valuable are the policies that help us identify the vulnerabilities. These policies are then used for scanning instabilities and then identifying the particular vulnerabilities."
"It gives a holistic view of your entire environment."
"The solution provides time saving and cost saving benefits."
"Tenable Nessus is one of the best vulnerability assessment tools, that I know."
"Makes ransomware checking and OS auditing and implementation relatively easy."
"The initial setup of Tenable Nessus is very easy."
"The scanning and reporting features are the most valuable aspects of Tenable Nessus."
"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."
"I rate the stability of the NodeZero Platform a ten out of ten."
"For us, The NodeZero Platform is literally the single best security solution we have because the way that it works is we're able to scan every part of our network, both internally and externally, and then get completely actionable feedback that doesn't matter if it's for an application developer or a network admin."
"The NodeZero Platform is amazing; what I love most about it is that it's automated and comparable to the manual pen testing we did with a third-party company, but with the added benefit of unlimited retesting to validate fixes."
"The NodeZero Platform's real attack capabilities help identify vulnerabilities on my on-premise systems by adding an element of validation and offensive security testing on top of known vulnerabilities. The feature that allows security teams to fix and retest vulnerabilities instantly is very useful, even though it may not happen literally 'instantly.' It's a necessary tool for any organization to understand whether vulnerabilities are genuinely exploitable by attackers. With its near-real-time testing capabilities, it's an essential part of any security portfolio."
"Honestly, it's one of the most transformational technologies we've implemented in our company."
"We experienced a threat that could have severely crippled us, but we were able to shut it down before it escalated, thanks to internal vulnerability testing and addressing critical vulnerabilities using their tool."
"After the third party conducts the pen test, The NodeZero Platform is run, and it finds the same things they found and sometimes a few other things that they did not even identify."
 

Cons

"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 dashboarding and reporting functionality of Zafran Security is an area that definitely could use some improvements."
"I would like to have a management option after the network scanning."
"We feel the solution's technical support to be very bad."
"The product could have unique features similar to one of its competitors."
"The solution should be able to support more devices."
"Multiple user access would be an area for improvement from a user-access perspective. A role-based access control feature would be great because at present, there is a limitation with only one account. If that account gets compromised or gets locked, then we will encounter problems."
"Online learning could be a bit better."
"The price and scalability of the solution could improve."
"Tenable Nessus could improve the price."
"Sometimes even their support doesn't know why we're seeing certain issues."
"The speed of the scans takes some time, but in my opinion, it is not surprising for what it is doing."
"You need to be cautious about what it scans, as it could potentially cause issues."
"The reports are quite useless."
"They've added a chatbot which isn't particularly useful, but when it can't answer questions, it forwards messages to human support."
"The only issue we’ve encountered is that sometimes the scans take a long time to complete."
"I think The NodeZero Platform could improve by leveraging GPUs for password cracking, which would be pretty good."
"I encountered challenges with patch management, as we struggled to test and implement patches due to time constraints. This led to our patch management process being ineffective."
 

Pricing and Cost Advice

Information not available
"We paid about six thousand dollars per license."
"Nessus is affordable, but its licensing model could be improved with more flexibility for adding assets."
"The solution has a single price for unlimited assets."
"We incurred a single cost for a perpetual license, although I cannot comment on the price as this is above my management level."
"The price is okay. I would give it a seven out of ten, where one is cheap and ten is expensive."
"Tenable Nessus needs to be licensed. We own a license for the security center and that license is charged by the number of IP addresses that you can scan. You're allowed to have as many scanners as you want and there's no license for the number of scanners. We have a bunch of Nessus scanners out there, and as long as we're comfortable with staying under that IP address limit, that's really all we have to be concerned about."
"We have a subscription, the licensing fees are paid yearly, and I am using the latest version."
"There is an annual license required to use this solution."
Information not available
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Computer Software Company
9%
Manufacturing Company
8%
Government
5%
Computer Software Company
12%
Financial Services Firm
11%
Government
10%
Manufacturing Company
10%
Computer Software Company
11%
Educational Organization
9%
Manufacturing Company
8%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business39
Midsize Enterprise19
Large Enterprise35
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise1
Large Enterprise4
 

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...
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...
What do you like most about Horizon3.ai?
Penetration testing and scans are useful features.
What needs improvement with Horizon3.ai?
One significant area to focus on is external vulnerabilities, particularly in the web application space. This often r...
What is your primary use case for Horizon3.ai?
The primary use case that we have for The NodeZero Platform is for scanning the environment and identifying vulnerabi...
 

Also Known As

No data available
No data available
Horizon3.ai
 

Overview

 

Sample Customers

Information Not Available
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
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.
Find out what your peers are saying about Tenable Nessus vs. The NodeZero Platform by Horizon3.ai and other solutions. Updated: September 2025.
872,869 professionals have used our research since 2012.