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Checkmarx One vs Tenable Nessus comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Oct 9, 2024

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
5.6
Checkmarx One enhances security by automating vulnerability detection, reducing costs, and improving development efficiency through CI/CD integration.
Sentiment score
3.0
Tenable Nessus boosts security by enhancing threat visibility, reducing vulnerabilities, saving costs, and achieving high user satisfaction.
Overall, between the fast scanning, automation, automatic reporting, and easy detection, it has reduced manual effort enough that we did not need an extra reviewer, even as our codebase or team size grew.
Senior GenAI Engineer at a tech vendor with 10,001+ employees
Based on my interactions with the clients, I can tell that there is a return on investment because if something is not profitable and it's not helping to save costs or vulnerabilities, clients wouldn't come back to renew their license year after year.
Chief Technology Officer at 3CS Aquarah Limited
 

Customer Service

Sentiment score
7.0
Checkmarx One support is praised for quick responses and knowledgeable staff, despite some reporting delays in technical support.
Sentiment score
3.9
Tenable Nessus support is praised for responsiveness and efficiency, with mixed feedback on response times and depth for advanced queries.
If you raise a support case with Checkmarx, it is handled smoothly.
ML Engineer - Specialist at a tech vendor with 10,001+ employees
The customer support team is amazing and they provide on-phone call, email support, and on-website support.
Senior Solution Architect | L3+ Systems & Cloud Engineer | SRE Specialist at Canada Cloud Solution
I have relied on Checkmarx One customer support hundreds of times for several things, and Checkmarx One support is very proactive and very responsive.
Chief Technology Officer at 3CS Aquarah Limited
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
7.0
Checkmarx One is scalable for large workloads, but some users report challenges with configurations and licensing requirements.
Sentiment score
5.2
Tenable Nessus is scalable and flexible for most organizations but may face limitations with very large enterprises.
Approximately four billion lines of code are being scanned monthly.
Cyber Security Expert at Nestle
Since it is cloud-based, the infrastructure and PaaS, IaaS, and SaaS are taken care of by the cloud marketplace.
Senior Solution Architect | L3+ Systems & Cloud Engineer | SRE Specialist at Canada Cloud Solution
Checkmarx One's scalability has changed my organization because the strong collaboration between the development and security team helps us to do things much faster.
Senior GenAI Engineer at a tech vendor 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
7.3
Checkmarx One is generally stable but faces issues with large codebases, memory use, and session inconsistencies.
Sentiment score
5.8
Tenable Nessus is praised for stability and reliability, with high user satisfaction despite minor setup and update issues.
I would rate the stability of this solution a nine on a scale of 1 to 10 where one is low stability and 10 is high.
Specialist Leader at Deloitte
Checkmarx One is often down when the cloud provider experiences issues.
Cyber Security Expert at Nestle
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

Checkmarx One needs enhancements in accuracy, speed, integration, UI, support, pricing, and features for enterprise usability.
Tenable Nessus requires enhanced reporting, better integration, modern UI, faster scans, accurate detection, and comprehensive IT asset coverage.
Integration into the IDE being used would be beneficial so that code does not need to be uploaded to the website and an IDE-friendly report could be generated.
Senior Software Engineer at a financial services firm with 10,001+ employees
It could suggest how the code base is written and automatically populate the source code with three different solution options to choose from.
Specialist Leader at Deloitte
If you can improve the speed optimization, it takes around 30 to 40 minutes for checking a build. If you can make it within five minutes or 10 minutes, that would be great.
Senior Software Engineer at a tech vendor with 10,001+ 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

Checkmarx One is often costly but provides quality and security, with costs varying by team size and selected modules.
Tenable Nessus is valued for affordability and flexibility, though costs vary by organization size, IP count, and region.
For a small team under 50 developers, normal expenses come under 30 to 60K.
Senior Solution Architect | L3+ Systems & Cloud Engineer | SRE Specialist at Canada Cloud Solution
Due to the number of years I've implemented Checkmarx One, there are rebates and discounts from the OEM which makes it a lot more profitable.
Chief Technology Officer at 3CS Aquarah Limited
The pricing should be reasonable, matching what we are paying for.
Senior GenAI Engineer at a tech vendor 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

Checkmarx One offers comprehensive vulnerability scanning, seamless CI/CD integration, and enhances productivity with ease of use and automation.
Tenable Nessus excels in vulnerability detection, user-friendliness, scalability, real-time monitoring, integration, compliance reporting, and remediation advice.
Since replacing the previous tool, SAST and SCA scans are conducted in a couple of minutes instead of hours or days.
Cyber Security Expert at Nestle
The best features Checkmarx One offers, over the past years, include broad language and technical support that Checkmarx provides, covering most languages.
ML Engineer - Specialist at a tech vendor with 10,001+ employees
Checkmarx One has positively impacted our organization as we tend to find vulnerabilities very early in the development cycle.
Product security engineer at a tech vendor with 10,001+ 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

Checkmarx One
Ranking in Vulnerability Management
16th
Average Rating
7.8
Reviews Sentiment
6.6
Number of Reviews
81
Ranking in other categories
Application Security Tools (2nd), Static Application Security Testing (SAST) (2nd), Container Security (15th), Static Code Analysis (2nd), API Security (4th), Dynamic Application Security Testing (DAST) (2nd), DevSecOps (2nd), Risk-Based Vulnerability Management (10th), Application Security Posture Management (ASPM) (3rd), AI Security (1st)
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 Checkmarx One is 1.6%, up from 1.0% 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%
Checkmarx One1.6%
Other94.3%
Vulnerability Management
 

Featured Reviews

Shahzad Shahzad - PeerSpot reviewer
Senior Solution Architect | L3+ Systems & Cloud Engineer | SRE Specialist at Canada Cloud Solution
Enable secure development workflows while identifying opportunities for faster scans and improved AI guidance
Checkmarx One is a very strong platform, but there are several areas where it can improve to support modern DevSecOps workflows even better. For example, better real-time developer guidance is needed. The IDE plugin should offer richer AI-powered auto-fixes similar to SNYK Code or GitHub Copilot Security, as current guidance is good but not deeply contextual for large-scale enterprise codebases. This matters because it reduces developer friction and accelerates shift-left adoption. More transparency control over the correlation engines is another need. The correlation engine is powerful but not fully transparent. Users want to understand why vulnerabilities were correlated or de-prioritized, which helps AppSec teams trust the prioritization logic. Faster SAST scan and more language coverage is needed since SAST scan can still be slow for very large mono-repos and there is limited deep support for new language frameworks like Rust and Go, along with advanced coverage for serverless-specific frameworks. This matters because large organizations want sub-minute scans in CI/CD as cloud-native ecosystems evolve fast. A strong API security module is another area for enhancement. API security scanning could be improved with active testing, API discovery, full Swagger, OpenAPI, drift detection, and schema-based fuzzing. This is important as API attacks are one of the biggest AppSec risks in 2025. Checkmarx One is strong, but I see a few areas for improvement including faster SAST scanning for large mono-repos, deeper language framework support, more transparent correlation logic, and stronger API security that includes discovery and runtime context. The IDE plugin could offer more AI-assisted fixes, and the SBOM lifecycle tracking can evolve further. Enhancing integration with SIEM and SOAR would also make enterprise adoption smoother, and these improvements would help developers and AppSec teams move faster with more accuracy.
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
17%
Manufacturing Company
9%
Computer Software Company
8%
Government
6%
Financial Services Firm
10%
Manufacturing Company
10%
Government
9%
Computer Software Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise9
Large Enterprise46
By reviewers
Company SizeCount
Small Business40
Midsize Enterprise19
Large Enterprise35
 

Questions from the Community

What alternatives are there for Fortify WebInspect and Fortify SCA?
I would like to recommend Checkmarx. With Checkmarx, you are able to have an all in one solution for SAST and SCA as well. Veracode is only a cloud solution. Hope this helps.
What is your experience regarding pricing and costs for Checkmarx?
Checkmarx One is a premium solution, so budget accordingly. Make sure you understand how licensing scales with additional applications and users. I advise negotiating multi-year contracts or bundle...
What needs improvement with Checkmarx?
One way Checkmarx One could be improved is if it could automatically run scans every month after implementation. If it is possible to set it in the SAST portal to scan the repositories automaticall...
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. You can easily prioritize vulnerabilities using attacker analytics. Overall, Rapid...
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 the program is such that if a company should desire to handle the installation t...
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 it remains acceptable. The annual price increase of six to seven percent could ...
 

Overview

 

Sample Customers

YIT, Salesforce, Coca-Cola, SAP, U.S. Army, Liveperson, Playtech Case Study: Liveperson Implements Innovative Secure SDLC
Bitbrains, Tesla, Just Eat, Crosskey Banking Solutions, Covenant Health, Youngstown State University
Find out what your peers are saying about Checkmarx One vs. Tenable Nessus and other solutions. Updated: April 2026.
892,678 professionals have used our research since 2012.