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Checkmarx One vs Defensics Protocol Fuzzing comparison

 

Comparison Buyer's Guide

Executive Summary

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

Checkmarx One
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) (3rd), Vulnerability Management (17th), Container Security (15th), Static Code Analysis (2nd), API Security (3rd), Dynamic Application Security Testing (DAST) (2nd), DevSecOps (2nd), Risk-Based Vulnerability Management (7th), Application Security Posture Management (ASPM) (3rd), AI Security (2nd)
Defensics Protocol Fuzzing
Average Rating
8.6
Number of Reviews
4
Ranking in other categories
Fuzz Testing Tools (4th)
 

Mindshare comparison

While both are Quality Assurance solutions, they serve different purposes. Checkmarx One is designed for Application Security Tools and holds a mindshare of 9.9%, down 11.4% compared to last year.
Defensics Protocol Fuzzing, on the other hand, focuses on Fuzz Testing Tools, holds 18.3% mindshare, down 21.0% since last year.
Application Security Tools Market Share Distribution
ProductMarket Share (%)
Checkmarx One9.9%
SonarQube16.9%
Snyk5.6%
Other67.6%
Application Security Tools
Fuzz Testing Tools Market Share Distribution
ProductMarket Share (%)
Defensics Protocol Fuzzing18.3%
PortSwigger Burp Suite Professional32.7%
GitLab26.7%
Other22.299999999999997%
Fuzz Testing Tools
 

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.
SK
Senior Technical Lead at HCL Technologies
Product security tests for switches and router sections
Codenomicon Defensics should be more advanced for the testing sector. It should be somewhat easy and flexible to install. What I see in the documentation isn't that. Even if something doesn't malfunction, sometimes it is hard to install and execute. The product needs video documentation. This would help a lot more.

Quotes from Members

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

Pros

"The features and technologies are very good. The flexibility and the roadmap have also been very good. They're at the forefront of delivering the additional capabilities that are required with cloud delivery, etc. Their ability to deliver what customers require and when they require is very important."
"Apart from software scanning, software composition scanning is valuable."
"Less false positive errors as compared to any other solution."
"It shows in-depth code of where actual vulnerabilities are."
"We use the solution to validate the source code and do SAST and security analysis."
"Checkmarx One has positively impacted my organization because in the past, when Checkmarx One scan was not implemented, we faced a lot of issues finding vulnerabilities inside the repository, but now, since we have integrated Checkmarx One into our repository, we can smoothly and very easily find vulnerabilities and manage those effectively."
"The administration in Checkmarx is very good."
"The solution improved the efficiency of our code security reviews. It helps tremendously because it finds hundreds of potential problems sometimes."
"The product is related to US usage with TLS contact fees, i.e. how more data center connections will help lower networking costs."
"We have found multiple issues in our embedded system network protocols, related to buffer overflow. We have reduced some of these issues."
"Whatever the test suit they give, it is intelligent. It will understand the protocol and it will generate the test cases based on the protocol: protocol, message sequence, protocol, message structure... Because of that, we can eliminate a lot of unwanted test cases, so we can execute the tests and complete them very quickly."
 

Cons

"The product can be improved by continuing to expand the application languages and frameworks that can be scanned for vulnerabilities. This includes expanded coverage for mobile applications as well as open-source development tools."
"The statistics module has a function that allows you to show some statistics, but I think it's limited. Maybe it needs more information."
"The interactive application security testing, or IAST, the interactive part where you're looking at an application that lives in a runtime environment on a server or virtual machine, needs improvement."
"If it is a very large code base then we have a problem where we cannot scan it."
"Updating and debugging of queries is not very convenient."
"Checkmarx could improve the REST APIs by including automation."
"Checkmarx being Windows only is a hindrance. Another problem is: why can't I choose PostgreSQL?"
"Some were valid and some were not applicable for us based on the scenario."
"Codenomicon Defensics should be more advanced for the testing sector. It should be somewhat easy and flexible to install."
"It does not support the complete protocol stack. There are some IoT protocols that are not supported and new protocols that are not supported."
"Sometimes, when we are testing embedded devices, when we trigger the test cases, the target will crash immediately. It is very difficult for us to identify the root cause of the crash because they do not provide sophisticated tools on the target side. They cover only the client-side application... They do not have diagnostic tools for the target side. Rather, they have them but they are very minimal and not very helpful."
 

Pricing and Cost Advice

"The solution is costly."
"We have purchased an annual license to use this solution. The price is reasonable."
"We're using a commercial version of Checkmarx, and we paid for the solution for one year. The price is high and could be reduced."
"The price of Checkmarx could be reduced to match their competitors, it is expensive."
"For around 250 users or committers, the cost is approximately $500,000."
"I would rate the solution’s pricing an eight out of ten. The tool’s pricing is higher than others and it is for the license alone."
"The pricing is competitive and provides a lower TCO (total cost of ownership) for achieving application security."
"Most of my customers opted for a perpetual license. They prefer to pay the highest amount up front for the perpetual license and then pay for additional support annually."
"Licensing is a bit expensive."
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Top Industries

By visitors reading reviews
Financial Services Firm
18%
Computer Software Company
10%
Manufacturing Company
10%
Government
5%
Computer Software Company
17%
Manufacturing Company
14%
Financial Services Firm
8%
Retailer
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business32
Midsize Enterprise9
Large Enterprise46
No data available
 

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 do you like most about Checkmarx?
Compared to the solutions we used previously, Checkmarx has reduced our workload by almost 75%.
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...
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Also Known As

No data available
Codenomicon Defensics
 

Overview

 

Sample Customers

YIT, Salesforce, Coca-Cola, SAP, U.S. Army, Liveperson, Playtech Case Study: Liveperson Implements Innovative Secure SDLC
Coriant, CERT-FI, Next Generation Networks
Find out what your peers are saying about SonarSource Sàrl, Checkmarx, Veracode and others in Application Security Tools. Updated: February 2026.
881,733 professionals have used our research since 2012.