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

9,445 Views
8,784 Comparison Views

88% willing to recommend

Synopsys API Security Testi...

Read 1 Synopsys API Security Testing [EOL] review

100% willing to recommend

OWASP Zap

Synopsys API Security Testi...

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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, Checkmarx, Veracode and others in Static Application Security Testing (SAST).

To learn more, read our detailed Static Application Security Testing (SAST) Report (Updated: August 2026).

Buyer's Guide

Static Application Security Testing (SAST)

August 2026

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Helped 908,800 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

Ranking in other categories

Static Application Security Testing (SAST) (16th)

Synopsys API Security Testi...

Average Rating

7.0

Number of Reviews

Ranking in other categories

No ranking in other categories

Featured Reviews

Amit Beniwal

Project Manager at Al Hassan LLC

Simplifies vulnerability discovery and has high quality support

There are areas for improvement with OWASP Zap, particularly in the alignment of vulnerabilities concerning CVSS scores. Sometimes, a vulnerability initially categorized as high severity may be reduced to medium or low over time after security patches are applied. This alignment with the present severity score and CVSS score could be improved.

Read full review

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

"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."

"The solution is good at reporting the vulnerabilities of the application."

"The community support that ZAP provides me, as an open source, provides me flexibility and is convenient to use."

"The scalability of this product is very good."

"This solution is providing us with value and as long as it continues to do so, we'll continue to use it."

"The automatic scanning is a valuable feature and very easy, and the major advantage to this solution is the privacy it offers."

"The pull request analysis is also very good."

"The vulnerabilities that it finds, because the primary goal is to secure applications and websites."

More OWASP Zap pros

"The most valuable features of Synopsys API Security Testing are the metrics, results, and threat vectors that it shares."

"The technical support from Synopsys API Security Testing is amazing."

Cons

"While the solution can scale to a certain extent, it cannot scale a lot."

"The automatic scans need improvement. The automated vulnerability assessments that the application performs needs to be simplified as well as diversified."

"Sometimes, we get some false positives."

"It would be nice to have a solid SQL injection engine built into Zap."

"The documentation needs to be improved because I had to learn everything from watching YouTube videos."

"There's very little documentation that comes with OWASP Zap."

"It would be ideal if I could try some pre-built deployment scenarios so that I don't have to worry about whether the configuration sector team is doing it right or wrong. That would be very helpful."

"We get too many false positives and that should definitely be improved."

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."

"We haven't covered all the areas yet in our business. It's still being scaled up within the organization. We've probably covered 10 percent of the business. I don't think we've seen a proper ROI yet."

Pricing and Cost Advice

"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."

"OWASP ZAP is a free tool provided by OWASP’s engineers and experts. There is an option to donate."

"This app is completely free and open source. So there is no question about any pricing."

"OWASP Zap is free to use."

"It is open source, and we can scan freely."

"It's free. It's good for us because we don't know what the extent of our use will be yet. It's good to start with something free and easy to use."

"As Zap is free and open-source, with tons of features similar to those of commercial solutions, I would definitely recommend trying it out."

More OWASP Zap pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Computer Software Company

10%

Financial Services Firm

University

Manufacturing Company

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	11
Midsize Enterprise	11
Large Enterprise	22

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 ...

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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

What needs improvement with OWASP Zap?

The improvement that has to be done for APIs focuses on manual activities where the feature exists, but it is not at the same level as what Burp Suite does with intercepting and tools such as Postm...

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Comparisons

PortSwigger Burp Suite Professional vs OWASP Zap

Compared 12% of the time

Acunetix vs OWASP Zap

Compared 10% of the time

Veracode vs OWASP Zap

Compared 7% of the time

SonarQube vs OWASP Zap

Compared 6% of the time

Qualys Web Application Scanning vs OWASP Zap

Compared 6% of the time

More OWASP Zap Competitors

Invicti vs Synopsys API Security Testing [EOL]

Compared 27% of the time

SonarQube vs Synopsys API Security Testing [EOL]

Compared 24% of the time

Aikido Security vs Synopsys API Security Testing [EOL]

Compared 16% of the time

Acunetix vs Synopsys API Security Testing [EOL]

Compared 15% of the time

Seeker Interactive vs Synopsys API Security Testing [EOL]

Compared 7% of the time

More Synopsys API Security Testing [EOL] Competitors

Product Reports

Buyer's Guide

OWASP Zap

July 2026

Download OWASP Zap product report

Buyer's Guide

Static Application Security Testing (SAST)

August 2026

Synopsys API Security Testing [EOL] report

Download 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)

August 2026

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Find out what your peers are saying about SonarSource Sàrl, Checkmarx, Veracode and others in Static Application Security Testing (SAST). Updated: August 2026.

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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.