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OWASP Zap vs Qualys Web Application Scanning comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 18, 2026

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
Ranking in Static Application Security Testing (SAST)
16th
Average Rating
7.6
Reviews Sentiment
7.3
Number of Reviews
41
Ranking in other categories
No ranking in other categories
Qualys Web Application Scan...
Ranking in Static Application Security Testing (SAST)
14th
Average Rating
7.6
Reviews Sentiment
6.3
Number of Reviews
40
Ranking in other categories
Application Security Tools (19th)
 

Mindshare comparison

As of August 2026, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 2.7%, down from 5.0% compared to the previous year. The mindshare of Qualys Web Application Scanning is 1.9%, down from 2.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Static Application Security Testing (SAST) Mindshare Distribution
ProductMindshare (%)
Qualys Web Application Scanning1.9%
OWASP Zap2.7%
Other95.4%
Static Application Security Testing (SAST)
 

Q&A Highlights

MK
Software Test Engineer at a tech company with 501-1,000 employees
Jan 23, 2020
 

Featured Reviews

Amit Beniwal - PeerSpot reviewer
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.
AnkitSharma13 - PeerSpot reviewer
Security Officer at a tech vendor with 10,001+ employees
Web scanning needs improvement but offers good vulnerability detection
The downside of Qualys Web Application Scanning is that it cannot crawl automatically. If I provide an IP address and a login form, it does basic testing, but it doesn't go deep as IBM AppScan does. If Qualys Web Application Scanning could improve its crawling capability, it would be more user-friendly. Qualys Web Application Scanning does IP-level testing, requiring direct input of credentials, and can only scan a few pages to provide known generic vulnerabilities, which isn't as beneficial from my point of view. The Vulnerability Management also relies heavily on version numbers and will flag vulnerabilities based on the component version, but it doesn't check if a real fix exists, leading to flags on components that actually have workarounds available.

Quotes from Members

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

Pros

"The product helps users to scan and fix vulnerabilities in the pipeline."
"The pull request analysis is also very good."
"The HUD, Heads Up Display, is a good feature; it provides on-site testing and saves a lot of time."
"We use the solution for security testing."
"The reporting is quite intuitive, which gives you a clear indication of what kind of vulnerability you have that you can drill down on to gather more information."
"We use OWASP Zap for web application security scanning."
"Simple to use, good user interface."
"The OWASP's tool is free of cost, which gives it a great advantage, especially for smaller companies to make use of the tool and at the same time give a comprehensive report with great confidence to the client for helping them in their go-live decision."
"Qualys Web Application Scanning has multiple features like threat protection and container security scanning in one box."
"It works with many different products."
"It is easy to use."
"WAS gave us visibility into our externally exposed web applications and showed us vulnerabilities that we were not aware of and did not know how to test for."
"The tool links vulnerabilities with DDIs and gives a complete overview of the application. The continuous monitoring capability is good."
"You can integrate your Burp Suite results and create an integrated report. Also, the way it shows the results - threats and exploit details - makes remediation very easy."
"It protects against zero-day vulnerabilities, like Heartbleed."
"Technical support is very good whenever we send them a message."
 

Cons

"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."
"The product should allow users to customize the report based on their needs."
"OWASP Zap needs to extend to mobile application testing."
"Right now, I can't give it off to a team and expect them to give me a report that I'm happy with."
"We have had stability issues a few times."
"Zap could improve by providing better reports for security and recommendations for the vulnerabilities."
"It needs more robust reporting tools that can be in an editable form."
"We get too many false positives and that should definitely be improved."
"The licensing and user permissions are a little wonky for a DevOps team to use, probably because it’s traditionally an InfoSec tool."
"We procured around 110 licenses for Web Application Scanning, but we have issues running concurrent scans. I don't currently have the option to trigger scans for all 100-plus websites. The default limit is around 10 conference scans. It's not very scalable, to be honest, because of the limitation that they put on concurrent scans."
"There could be better management and faster scanning."
"It's missing some zero-day patches."
"We have many websites. We don't force scanning on all of them at once because it's taking some time."
"The pricing does not seem to be competitive."
"I would like it to be cheaper because it is a bit expensive compared to competitors like Tenable Nessus."
"Deployment can be complicated."
 

Pricing and Cost Advice

"OWASP Zap is free to use."
"It is highly recommended as it is an open source tool."
"OWASP ZAP is a free tool provided by OWASP’s engineers and experts. There is an option to donate."
"The solution’s pricing is high."
"The tool is open-source."
"We have used the freeware version. I believe Zap only has freeware."
"It is open source, and we can scan freely."
"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."
"There are different options available with respect to licensing."
"We normally purchase an annual license."
"It is an expensive platform."
"Qualys WAS' pricing is competitive."
"The cost is $30,000 USD for one year to cover WAS (Web Application Security) and the VM (Virtual Machine) security in a company with 200 employees."
"The product has a very good licensing model."
"The product pricing is fair and reasonably priced."
"​It is best to be an institutional buyer and directly contact the sales team, as they can provide over-the-top discounts for bulk orders​."
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Top Industries

By visitors reading reviews
Computer Software Company
10%
Financial Services Firm
9%
University
9%
Manufacturing Company
8%
Financial Services Firm
13%
Manufacturing Company
11%
Construction Company
7%
Computer Software Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise11
Large Enterprise22
By reviewers
Company SizeCount
Small Business8
Midsize Enterprise6
Large Enterprise27
 

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 ...
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.
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...
What is your experience regarding pricing and costs for Qualys Web Application Scanning?
Regarding pricing, I think for personal use, it is costly, but if organizations are ready to pay, then it is fine as they are using it.
What needs improvement with Qualys Web Application Scanning?
The downside of Qualys Web Application Scanning is that it cannot crawl automatically. If I provide an IP address and a login form, it does basic testing, but it doesn't go deep as IBM AppScan does...
What is your primary use case for Qualys Web Application Scanning?
I use Qualys Web Application Scanning, and we are using Vulnerability Management. By Vulnerability Management, I mean not TotalCloud; they have some on-premises solutions also. Patch Management and...
 

Also Known As

No data available
Qualys WAS
 

Overview

 

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
BskyB, Cartagena, ClearPoint Learning Systems, Connect Group, du, Fortrex Technologies, HBOR, HDI, Highlights for Children, The Lithuanian State Enterprise Centre of Registers, City of Miami Beach, Microsoft, MidlandHR, MSCI Inc., Northern Arizona University, Ofgem, Olympus Europa, PhoneFactor, RTL Nederland, ThousandEyes, VGZ Organisatie B.V.
Find out what your peers are saying about OWASP Zap vs. Qualys Web Application Scanning and other solutions. Updated: August 2026.
908,834 professionals have used our research since 2012.