Try our new research platform with insights from 80,000+ expert users

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)
9th
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)
13th
Average Rating
7.6
Reviews Sentiment
6.3
Number of Reviews
40
Ranking in other categories
Application Security Tools (15th)
 

Mindshare comparison

As of March 2026, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 3.4%, down from 4.8% compared to the previous year. The mindshare of Qualys Web Application Scanning is 1.8%, 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 (%)
OWASP Zap3.4%
Qualys Web Application Scanning1.8%
Other94.8%
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."
"We use OWASP Zap for web application security scanning."
"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."
"OWASP is the best."
"The solution is scalable."
"​It has improved my organization with faster security tests.​"
"The API is exceptional."
"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, it's very difficult."
"Qualys' process of updating signatures is something we really appreciate, and it's way ahead of its industry peers."
"By using QualysGuard, we are able to finish external scans with assured results in half the time."
"I would recommend this tool."
"By using QualysGuard, we are able to finish external scans with assured results in half the time.​"
"It protects against zero-day vulnerabilities, like Heartbleed."
"Its most valuable features are patch management, vulnerability management, and PCI compliance."
"​QualysGuard web-based scanner is very useful for performing external penetration and PCI scans from remote locations.​"
"Qualys is perfect, scalability-wise."
 

Cons

"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 have had stability issues a few times."
"ZAP's integration with cloud-based CICD pipelines could be better. The scan should run through the entire pipeline."
"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."
"While the solution can scale to a certain extent, it cannot scale a lot."
"The product reporting could be improved."
"Zap could improve by providing better reports for security and recommendations for the vulnerabilities."
"I would like to see a version of “repeater” within OWASP ZAP, a tool capable of sending from one to 1000 of the same requests, but with preselected modified fields, changing from a predetermined word ​list, or manually created."
"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."
"The UI is not user-friendly and you don't have a yearly reporting facility where you can slice and dice in different jobs."
"The scanner reports a lot of false positives, which is something that needs to be improved."
"When comparing this solution to Veracode, Veracode has good interactive features and gives a clear understanding of what the vulnerabilities are, which error line of the vulnerability is on and what can be done. It gives interactive features, whereas this solution does not give a clear understanding of where or how to fix the problem."
"The solution needs to adjust its pricing. They should make it more affordable."
"The support could be faster."
"When comparing this solution to Veracode, Veracode has good interactive features and gives a clear understanding of what the vulnerabilities are, which error line the vulnerability is on and what can be done."
"The downside of Qualys Web Application Scanning is that it cannot crawl automatically."
 

Pricing and Cost Advice

"This solution is open source and free."
"This app is completely free and open source. So there is no question about any pricing."
"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."
"This is an open-source solution and can be used free of charge."
"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."
"From my perspective, it is a budget-friendly option."
"The product is expensive, at least initially, in comparison to other products in this category."
"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."
"Qualys WAS' pricing is competitive."
"The product has a very good licensing model."
"Licensing was based on the number of assets that you want to scan on your network. You can also do licensing on subscription. On subscription, it is easier and more flexible. You tell Qualys that you want to move from the 1000 to 2000 band or the 3000 or 5000 band, then they will give you the quotation for it. Once you pay for it, applying the licensing is quite easy and effective."
"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."
report
Use our free recommendation engine to learn which Static Application Security Testing (SAST) solutions are best for your needs.
885,264 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
9%
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 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...
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 do you like most about Qualys Web Application Scanning?
The vulnerability management feature is a strong one. And also the patch management feature.
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...
 

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: March 2026.
885,264 professionals have used our research since 2012.