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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)
15th
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)
11th
Average Rating
7.6
Reviews Sentiment
6.3
Number of Reviews
40
Ranking in other categories
Application Security Tools (16th)
 

Mindshare comparison

As of May 2026, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 3.1%, down from 5.1% 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 Zap3.1%
Other95.0%
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

NK
Technical Analyst at Hexaware Technologies Limited
Open source testing tool empowers manual activities and has room to improve integration and reporting features
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 Postman, so it needs improvement. There are limitations with authentication levels, particularly with form-based and cookie-based authentication. However, overall, we are satisfied with OWASP Zap as there are no major issues, and improving the scan engine could be beneficial. 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.
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 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."
"As Zap is free and open-source, with tons of features similar to those of commercial solutions, I would definitely recommend trying it out."
"OWASP is definitely in the top three as a tool that we would probably recommend to our team, as a frequent users' tool, however, I don't believe we have any kind of a formal relationship with the company."
"The community support that ZAP provides me, as an open source, provides me flexibility and is convenient to use."
"The interface is easy to use."
"The API is exceptional."
"The product discovers more vulnerabilities compared to other tools."
"OWASP is quite matured in identifying the vulnerabilities."
"The vulnerability management feature is a strong one. And also the patch management feature."
"It combines both web application vulnerability management and internal vulnerability management on one platform and dashboard."
"The advantage of Qualys Web Application Scanning lies in its user-friendly dashboard and appealing reports, which are useful for presentation to leadership."
"Network scanner has good reporting, coverage was also good."
"The best thing about this product is that it is really easy to use."
"I have found the detection of vulnerabilities tool thorough with good results and the graphical display output to be wonderful and full of colors."
"With our vulnerabilities under control, it puts our services in compliance and minimizes our risk for exposure."
"What I remember from my experience with Qualys is that the simplicity of exporting reports and the simplicity and clarity of the reports included with the product is good."
 

Cons

"It's possibly just a limitation of the product itself but sometimes it won't scan a particular website so you have to manually go in and make some configuration changes."
"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."
"I'd like to see a kind of feature where we can just track what our last vulnerability was and how it has improved or not. More reports that can have some kind of base-lining, I think that would be a good feature too. I'm not sure whether it can be achieved and implement but I think that would really help."
"They stopped their support for a short period. They've recently started to come back again. In the early days, support was much better."
"We're currently moving away from OWASP to PortSwigger Burp Suite Professional; it's more user-friendly with a better interface."
"The work that it does in the limited scope is good, but the scope is very limited in terms of the scanning features. The number of things it tests or finds is limited. They need to make it a more of a mainstream tool that people can use, and they can even think about having it on a proprietary basis. They need to increase the coverage of the scan and the results that it finds. That has always been Zap's limitation. Zap is a very good tool for a beginner, but once you start moving up the ladder where you want further details and you want your scan to show more in-depth results, Zap falls short because its coverage falls short. It does not have the capacity to do more."
"The documentation needs to be improved because I had to learn everything from watching YouTube videos."
"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."
"The pricing does not seem to be competitive."
"The UI is not user-friendly and you don't have a yearly reporting facility where you can slice and dice in different jobs."
"There should be better visibility into the application."
"Sometimes the response time is low because the handshake fails, and then you have to re-login and start again."
"The software’s pricing could be improved."
"I have experience with adaptive scanning for single-page applications, which was not very effective."
"Please add manual penetration testing features. Also I didn't like the license terms and the features were limited compared to other tools used for web applications."
"They should improve the performance of the security scanning. It should have better performance."
 

Pricing and Cost Advice

"OWASP Zap is free 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."
"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 solution’s pricing is high."
"The tool is open source."
"OWASP ZAP is a free tool provided by OWASP’s engineers and experts. There is an option to donate."
"It is open source, and we can scan freely."
"There are different options available with respect to licensing."
"I rate the software’s pricing a six out of ten."
"Pricing was reasonable and competitive. It was not too far above the other products."
"It is an expensive platform."
"From my perspective, it is a budget-friendly option."
"​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​."
"Qualys has an IT-based licensing based on a yearly license, which is a good way of handling it. However, in some cases, when we do the PCI scanning, the host will not like the scanning and we lose the IT license. So, this could be improved."
"The product has a very good licensing model."
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893,244 professionals have used our research since 2012.
 

Top Industries

By visitors reading reviews
Computer Software Company
11%
University
9%
Financial Services Firm
9%
Manufacturing Company
8%
Financial Services Firm
13%
Manufacturing Company
12%
Computer Software Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business11
Midsize Enterprise11
Large Enterprise21
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: April 2026.
893,244 professionals have used our research since 2012.