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OWASP Zap vs Synopsys API Security Testing [EOL] comparison

OWASP and Black Duck are both solutions in the Static Application Security Testing (SAST) category. Additionally, 88% of OWASP users are willing to recommend the solution, compared to 100% of Black Duck users who would recommend it.
OWASP Zap
Read 41 OWASP Zap reviews
  • 7,310 Views
  • 6,725 Comparison Views
88% willing to recommend
 

Comparison Buyer's Guide

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Executive Summary
We performed a comparison between OWASP Zap and Synopsys API Security Testing [EOL] based on real PeerSpot user reviews.

Find out what your peers are saying about SonarSource Sàrl, Veracode, Checkmarx and others in Static Application Security Testing (SAST).

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To learn more, read our detailed Static Application Security Testing (SAST) Report (Updated: November 2025).
Buyer's Guide
Static Application Security Testing (SAST)
November 2025
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Helped 879,422 peers since 2012

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

OWASP Zap
Average Rating
7.6
Reviews Sentiment
7.3
Number of Reviews
41
Ranking in other categories
Static Application Security Testing (SAST) (10th)
Synopsys API Security Testi...
Average Rating
7.0
Number of Reviews
1
Ranking in other categories
No ranking in other categories
 

Featured Reviews

Prasant Pokarnaa - PeerSpot reviewer
Prasant Pokarnaa
Delivery Head - DevOps at Datamato Technologies
Effective vulnerability identification enhances security scans but AI-driven enhancements are needed
OWASP is only meant for two or three different types of scans. It is a tool which will scan the code for security for vulnerabilities We were able to convince the customers to really remove those rules when GitLab was able to show the results. Customers should be aware that GitLab is not just a…
Read full review
UmarQureshi - PeerSpot reviewer
UmarQureshi
Security Lead at a retailer with 10,001+ employees
Useful threat vectors, beneficial results, but implementation needed support
We are using Synopsys API Security Testing for scanning APIs for risks and vulnerabilities and to understand our posture before deployment within our business The most valuable features of Synopsys API Security Testing are the metrics, results, and threat vectors that it shares. I have been…
Read full review

Quotes from Members

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

Pros

"The API is exceptional."
"The solution has tightened our security."
"The product discovers more vulnerabilities compared to other tools."
"The stability of the solution is very good."
"It's great that we can use it with Portswigger Burp."
"The vulnerabilities that it finds, because the primary goal is to secure applications and websites."
"OWASP Zap is a good tool, one of my favorites for a long time, and I would recommend it."
"This solution has improved my organization because it has made us feel safer doing frequent deployments for web applications. If we have something really big, we might get some professional company in to help us but if we're releasing small products, we will check it ourselves with Zap. It makes it easier and safer."
More OWASP Zap pros
"The most valuable features of Synopsys API Security Testing are the metrics, results, and threat vectors that it shares."
 

Cons

"Too many false positives; test reports could be improved."
"If there was an easier to understand exactly what has been checked and what has not been checked, it would make this solution better. We have to trust that it has checked all known vulnerabilities but it's a bit hard to see after the scanning."
"Sometimes, we get some false positives."
"It doesn't run on absolutely every operating system."
"The forced browse has been incorporated into the program and it is resource-intensive."
"It would be beneficial to enhance the algorithm to provide better summaries of automatic scanning results."
"Deployment is somewhat complicated."
"Online documentation can be improved to utilize all features of ZAP and API methods to make use in automation."
More OWASP Zap cons
"The solution required us to use our team and we spoke to Synopsys API Security Testing's support to do the implementation. We use two people from our team for the implementation. and one person for maintenance."
 

Pricing and Cost Advice

"The tool is open-source."
"As Zap is free and open-source, with tons of features similar to those of commercial solutions, I would definitely recommend trying it out."
"We have used the freeware version. I believe Zap only has freeware."
"This is an open-source solution and can be used free of charge."
"This app is completely free and open source. So there is no question about any pricing."
"The tool is open source."
"It's free and open, currently under the Apache 2 license. If ZAP does what you need it to do, selling a free solution is a very easy."
"It is open source, and we can scan freely."
More OWASP Zap pricing and cost advice
Information not available
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879,422 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
14%
Financial Services Firm
9%
University
9%
Manufacturing Company
8%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise11
Large Enterprise21
No data available
 

Questions from the Community

Is OWASP Zap better than PortSwigger Burp Suite Pro?
OWASP Zap and PortSwigger Burp Suite Pro have many similar features. OWASP Zap has web application scanning available with basic security vulnerabilities while Burp Suite Pro has it available with ...
See all answers
What do you like most about OWASP Zap?
The best feature is the Zap HUD (Heads Up Display) because the customers can use the website normally. If we scan websites with automatic scanning, and the website has a web application firewall, i...
See all answers
What is your experience regarding pricing and costs for OWASP Zap?
OWASP might be cost-effective, however, people prefer to use the free edition available as open source.
See all answers
Ask a question
Earn 20 points
 

Comparisons

SonarQube vs OWASP Zap Logo
SonarQube vs OWASP Zap
Compared 18% of the time
Acunetix vs OWASP Zap Logo
Acunetix vs OWASP Zap
Compared 14% of the time
Checkmarx One vs OWASP Zap Logo
Checkmarx One vs OWASP Zap
Compared 9% of the time
Veracode vs OWASP Zap Logo
Veracode vs OWASP Zap
Compared 9% of the time
Qualys Web Application Scanning vs OWASP Zap Logo
Qualys Web Application Scanning vs OWASP Zap
Compared 7% of the time
More OWASP Zap Competitors
SonarQube vs Synopsys API Security Testing [EOL] Logo
SonarQube vs Synopsys API Security Testing [EOL]
Compared 27% of the time
Aikido Security vs Synopsys API Security Testing [EOL] Logo
Aikido Security vs Synopsys API Security Testing [EOL]
Compared 25% of the time
Acunetix vs Synopsys API Security Testing [EOL] Logo
Acunetix vs Synopsys API Security Testing [EOL]
Compared 24% of the time
Invicti vs Synopsys API Security Testing [EOL] Logo
Invicti vs Synopsys API Security Testing [EOL]
Compared 24% of the time
More Synopsys API Security Testing [EOL] Competitors
 

Product Reports

Buyer's Guide
OWASP Zap
December 2025
OWASP Zap reportDownload OWASP Zap product report
Buyer's Guide
Static Application Security Testing (SAST)
November 2025
Synopsys API Security Testing [EOL] reportDownload Synopsys API Security Testing [EOL] product report
 

Overview

OWASP Zap is a free and open-source web application security scanner. 

The solution helps developers identify vulnerabilities in their web applications by actively scanning for common security issues. 

With its user-friendly interface and powerful features, Zap is a popular choice among developers for ensuring the security of their web applications.

OWASP

AppSec testing optimized for the needs of API developers
APIs provide open, flexible interfaces that enable applications and services to talk to each other. But these characteristics can also make it difficult to build secure software—and even more difficult for traditional AppSec tools to test it.

Black Duck
 

Sample Customers

1. Google 2. Microsoft 3. IBM 4. Amazon 5. Facebook 6. Twitter 7. LinkedIn 8. Netflix 9. Adobe 10. PayPal 11. Salesforce 12. Cisco 13. Oracle 14. Intel 15. HP 16. Dell 17. VMware 18. Symantec 19. McAfee 20. Citrix 21. Red Hat 22. Juniper Networks 23. SAP 24. Accenture 25. Deloitte 26. Ernst & Young 27. PwC 28. KPMG 29. Capgemini 30. Infosys 31. Wipro 32. TCS
Information Not Available
Buyer's Guide
Static Application Security Testing (SAST)
November 2025
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Find out what your peers are saying about SonarSource Sàrl, Veracode, Checkmarx and others in Static Application Security Testing (SAST). Updated: November 2025.
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We monitor all Static Application Security Testing (SAST) reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.