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...

Comparison Buyer's Guide

Download the report

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

Download the complete report

Helped 909,563 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

"The product has improved our application security engagement, helps with our in-house review so we sometimes don't need an external third-party tester, and once we get it from OWASP Zap, we have an idea of the inherent vulnerabilities in the application, which is a plus to save cost and improve our application accuracy practice."

"The interface is easy to use."

"We use the solution for security testing."

"The solution has tightened our security and that of our clients who depend on it."

"We use OWASP Zap for web application security scanning."

"The API is exceptional."

"It has evolved over the years and recently in the last year they have added, HUD (Heads Up Display)."

"If you're a company and you've got your own websites, internally and externally, it's great."

More OWASP Zap pros

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

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

Cons

"The technical support team must be proactive."

"Sometimes, we get some false positives."

"OWASP Zap needs to extend to mobile application testing."

"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."

"They stopped their support for a short period. They've recently started to come back again. In the early days, support was much better."

"ZAP's integration with cloud-based CICD pipelines could be better. The scan should run through the entire pipeline."

"The disadvantage of Zap is that we're unable to customize reports as it only has a single standard format."

"There isn't too much information about it online."

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

"This solution is open source and free."

"OWASP Zap is free to use."

"It is highly recommended as it is an open source tool."

"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."

"We have used the freeware version. I believe Zap only has freeware."

"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."

"The solution’s pricing is high."

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

More OWASP Zap pricing and cost advice

Information not available

See which vendors are best for you

Use our free recommendation engine to learn which Static Application Security Testing (SAST) solutions are best for your needs.

See recommendations

909,563 professionals have used our research since 2012.

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 ...

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

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...

See all answers

Ask a question

Earn 20 points

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

Download Free Report

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

DOWNLOAD NOW

909,563 professionals have used our research since 2012.

See our list of best Static Application Security Testing (SAST) vendors.

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.