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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)
10th
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 (16th)
 

Mindshare comparison

As of January 2026, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 3.9%, down from 4.8% compared to the previous year. The mindshare of Qualys Web Application Scanning is 2.0%, down from 2.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Static Application Security Testing (SAST) Market Share Distribution
ProductMarket Share (%)
OWASP Zap3.9%
Qualys Web Application Scanning2.0%
Other94.1%
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

Prasant Pokarnaa - PeerSpot reviewer
Delivery Head - DevOps at Datamato Technologies
Effective vulnerability identification enhances security scans but AI-driven enhancements are needed
OWASP is only meant for two or three different types of scans. It is a tool which will scan the code for security for vulnerabilities We were able to convince the customers to really remove those rules when GitLab was able to show the results. Customers should be aware that GitLab is not just a…
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

"ZAP is easy to use. The automated scan is a powerful feature. You can simulate attacks with various parameters. ZAP integrates well with SonarQube."
"We use the solution for security testing."
"It scans while you navigate, then you can save the requests performed and work with them later."
"The solution is scalable."
"Automatic updates and pull request analysis."
"The vulnerabilities that it finds, because the primary goal is to secure applications and websites."
"They offer free access to some other tools."
"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."
"It works with many different products."
"The tool links vulnerabilities with DDIs and gives a complete overview of the application. The continuous monitoring capability is good."
"It scans web applications to identify vulnerabilities during deployment."
"Qualys Web Application Scanning is user-friendly, easy to understand, easy to use, and easy to deploy."
"Qualys Web Application Scanning is accurate and provides minimal false positives."
"It is a very stable solution."
"It combines both web application vulnerability management and internal vulnerability management on one platform and dashboard. Usually, you have to purchase separate tools."
"The Qualys Web Application Scanning solution offers a single comprehensive console and consolidated reporting, covering all aspects from on-prem to cloud and compliance, etcetera."
 

Cons

"The reporting feature could be more descriptive."
"The technical support team must be proactive."
"OWASP should work on reducing false positives by using AI and ML algorithms."
"The product reporting could be improved."
"It would be beneficial to enhance the algorithm to provide better summaries of automatic scanning results."
"It needs more robust reporting tools."
"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."
"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 reporting contains too many false positives."
"In terms of the Policy Compliance model which they currently have, not all the platforms are being covered. If they could improve on the Policy Compliance model, since there are policies which are benchmarked against it, this will be helpful for us."
"The GUI could be a little less complicated as it opens a lot of new windows for creating search lists, templates, reports, or for scanning purposes."
"We have many websites. We don't force scanning on all of them at once because it's taking some time."
"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 downside of Qualys Web Application Scanning is that it cannot crawl automatically."
"The solution needs to adjust its pricing. They should make it more affordable."
"Qualys Web Application Scanning is very complex to use, and its graphical interface is not very user-friendly."
 

Pricing and Cost Advice

"This solution is open source and free."
"OWASP ZAP is a free tool provided by OWASP’s engineers and experts. There is an option to donate."
"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."
"It is open source, and we can scan freely."
"The tool is open-source."
"OWASP Zap is free to use."
"This is an open-source solution and can be used free of charge."
"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​."
"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."
"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."
"Try the free trial of the product to understand the basic working mechanisms.​"
"There are different options available with respect to licensing."
"We normally purchase an annual license."
"The product is expensive, at least initially, in comparison to other products in this category."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
9%
University
9%
Manufacturing Company
8%
Financial Services Firm
14%
Manufacturing Company
12%
Computer Software Company
12%
Government
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: December 2025.
881,082 professionals have used our research since 2012.