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

7,876 Views
7,167 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 Sonar, Veracode, Checkmarx and others in Static Application Security Testing (SAST).

To learn more, read our detailed Static Application Security Testing (SAST) Report (Updated: October 2025).

Buyer's Guide

Static Application Security Testing (SAST)

October 2025

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Helped 872,778 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) (11th)

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…

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Quotes from Members

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

Pros

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

"Simple to use, good user interface."

"The interface is easy to use."

"The solution is scalable."

"Stability-wise, I rate the solution a nine out of ten. I think it's stable enough. I don't see any crashes within the application, so its stability is high."

"The OWASP's tool is free of cost, which gives it a great advantage, especially for smaller companies to make use of the tool."

"OWASP is quite matured in identifying the vulnerabilities."

"The product helps users to scan and fix vulnerabilities in the pipeline."

More OWASP Zap pros

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

Cons

"When comparing OWASP Zap and Burp Suite, the main difference besides pricing is that OWASP Zap has limitations with reporting levels and UI, which affects its reporting capabilities, whereas Burp Suite is already advancing with new AI features and scanning capabilities that OWASP Zap seems to be lacking."

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

"OWASP should work on reducing false positives by using AI and ML algorithms. They should expand their capabilities for broader coverage of business logic flaws and complex issues."

"The product should allow users to customize the report based on their needs."

"The solution is somewhat unreliable because after we get the finding, we have to manually verify each of its findings to see whether it's a false positive or a true finding, and it takes time."

"There are too many false positives."

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

"There are areas for improvement with OWASP Zap, particularly in the alignment of vulnerabilities concerning CVSS scores."

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

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

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

"The tool is open-source."

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

"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."

"This solution is open source and free."

"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."

More OWASP Zap pricing and cost advice

Information not available

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Top Industries

By visitors reading reviews

Computer Software Company

15%

Financial Services Firm

10%

University

Manufacturing Company

No data available

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	10
Midsize Enterprise	11
Large Enterprise	21

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 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...

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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.

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Comparisons

SonarQube Server (formerly SonarQube) vs OWASP Zap

Compared 17% of the time

Acunetix vs OWASP Zap

Compared 14% of the time

Checkmarx One vs OWASP Zap

Compared 10% of the time

Qualys Web Application Scanning vs OWASP Zap

Compared 9% of the time

Veracode vs OWASP Zap

Compared 9% of the time

More OWASP Zap Competitors

No data available

Product Reports

Buyer's Guide

OWASP Zap

October 2025

Download OWASP Zap product report

Buyer's Guide

Static Application Security Testing (SAST)

October 2025

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)

October 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.