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OWASP Zap vs Qualys Web Application Scanning comparison

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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)
13th
Average Rating
7.6
Reviews Sentiment
6.3
Number of Reviews
40
Ranking in other categories
Application Security Tools (19th)
 

Mindshare comparison

As of October 2026, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 2.5%, down from 4.7% compared to the previous year. The mindshare of Qualys Web Application Scanning is 2.0%, down from 2.2% 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 Scanning2.0%
OWASP Zap2.5%
Other95.5%
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 solution is very easy to use, the initial setup is straightforward, it is free due to the fact that it is open-source, the stability is very good, and the product has a strong community surrounding it to help with issues and troubleshooting."
"The ZAP scan and code crawler are valuable features."
"Simple and easy to learn and master."
"The product helps users to scan and fix vulnerabilities in the pipeline."
"OWASP is the best."
"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 interface is easy to use."
"It updates repositories and libraries quickly."
"​We have experienced quick customer support. They have a complete list of our previous issues along with our history, which makes it faster for them to solve issues.​"
"Its most valuable features are patch management, vulnerability management, and PCI compliance."
"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 features of Qualys Web Application Scanning are impressive as the scan is faster and gets completed quickly, the dashboards look great, the option for scheduled scans makes it fully automated, and customizable reports can be downloaded anytime in CSV, PDF, or whichever format required."
"Qualys Web Application Scanning is accurate and provides minimal false positives."
"By using QualysGuard, we are able to finish external scans with assured results in half the time.​"
"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."
"The interface is user-friendly and easy to understand."
 

Cons

"The documentation is lacking and out-of-date, it really needs more love."
"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."
"The technical support team must be proactive."
"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."
"It doesn't run on absolutely every operating system."
"I would recommend this product to people although I think it is very difficult to deploy and we also have issues with maintenance."
"There are areas for improvement with OWASP Zap, particularly in the alignment of vulnerabilities concerning CVSS scores."
"The computers perform somewhat slowly when loading a large number of queries into memory."
"We procured around 110 licenses for Web Application Scanning, but we have issues running concurrent scans."
"There could be better management and faster scanning."
"Sometimes the response time is low because the handshake fails, and then you have to re-login and start again."
"It's missing some zero-day patches."
"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."
"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."
 

Pricing and Cost Advice

"This is an open-source solution and can be used free of charge."
"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."
"This app is completely free and open source. So there is no question about any pricing."
"We have used the freeware version. I believe Zap only has freeware."
"The solution’s pricing is high."
"The tool is open-source."
"As Zap is free and open-source, with tons of features similar to those of commercial solutions, I would definitely recommend trying it out."
"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 an expensive platform."
"We normally purchase an annual license."
"From my perspective, it is a budget-friendly option."
"There are different options available with respect to licensing."
"The product is expensive, at least initially, in comparison to other products in this category."
"Qualys Web Application Scanning's pricing is a bit expensive compared to other solutions available in the market."
"Pricing was reasonable and competitive. It was not too far above the other products."
"The product pricing is fair and reasonably priced."
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Top Industries

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

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: September 2026.
917,403 professionals have used our research since 2012.