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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)
14th
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 (15th)
 

Mindshare comparison

As of June 2026, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 2.9%, 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 Zap2.9%
Other95.2%
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

"As Zap is free and open-source, with tons of features similar to those of commercial solutions, I would definitely recommend trying it out."
"This is a very mature tool; it is capable of facilitating the work of many security experts, and I highly recommend it for beginners and advanced users when some other tools fail to catch traffic."
"The stability of the solution is very good."
"Technical support is excellent."
"Zap is an open-source and sophisticated product that not only saves us money but also provides us with a good amount of information."
"Fuzzer and Java APIs help a lot with our custom needs."
"We use the solution for security testing."
"Automatic updates and pull request analysis."
"The most valuable feature of Qualys Web Application Scanning is the effective scanning that can be done."
"We’re a Linux shop and Qualys gave us good Linux vulnerability scanning; it reports only a few glaring false-positive errors, and the long baseline of iterative results was valuable to track changes and our rate of improvement while access to the API let us automate its use in our CI/CD pipeline for machine images."
"The tool links vulnerabilities with DDIs and gives a complete overview of the application. The continuous monitoring capability is good."
"Qualys WAS' most valuable features are the navigation flow of the UI and the option for a different layer of security (identification and operation through email and mobile)."
"It protects against zero-day vulnerabilities, like Heartbleed."
"Qualys Web Application Scanning is robust and mature from industry standards."
"With our vulnerabilities under control, it's putting our services in compliance and minimizing our risk for exposure."
"Technical support is very good whenever we send them a message."
 

Cons

"The port scanner is a little too slow.​"
"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."
"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."
"They stopped their support for a short period. They've recently started to come back again. In the early days, support was much better."
"It would be nice to have a solid SQL injection engine built into Zap."
"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."
"I prefer Burp Suite to SWASP Zap because of the extensive coverage it offers."
"It would be ideal if I could try some pre-built deployment scenarios so that I don't have to worry about whether the configuration sector team is doing it right or wrong. That would be very helpful."
"There's a distinction between internal and external scanning processes that could be streamlined. Currently, for internal scanning, specific configurations and scanner appliances need to be deployed within the network, which differs from the simpler setup for external scans. This dual process complicates the setup for comprehensive scanning coverage."
"The area of false positives could be improved. There are quite a number of false positives as compared to other solutions. They could probably fine tune the algorithm to be able to reduce the number of false positives being detected."
"There should be better visibility into the application."
"We procured around 110 licenses for Web Application Scanning, but we have issues running concurrent scans."
"We are researching open source software because Qualys needs to improve their reports and the documentation for the end-users in resolving scanned issues."
"The licensing and user permissions are a little wonky for a DevOps team to use, probably because it’s traditionally an InfoSec tool."
"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."
"Deployment can be complicated."
 

Pricing and Cost Advice

"OWASP Zap is free to use."
"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 ZAP is a free tool provided by OWASP’s engineers and experts. There is an option to donate."
"The tool is open-source."
"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."
"We have used the freeware version. I believe Zap only has freeware."
"This is an open-source solution and can be used free of charge."
"It is open source, and we can scan freely."
"Qualys Web Application Scanning's pricing is a bit expensive compared to other solutions available in the market."
"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."
"We are on an annual license for the solution and the pricing could be more affordable."
"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 is expensive, at least initially, in comparison to other products in this category."
"Qualys WAS' pricing is competitive."
"I rate the software’s pricing a six out of ten."
"Try the free trial of the product to understand the basic working mechanisms.​"
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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
14%
Manufacturing Company
12%
Computer Software Company
8%
Construction 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: June 2026.
902,270 professionals have used our research since 2012.