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OWASP Zap vs Qualys Web Application Scanning comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Mar 30, 2025

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)
11th
Average Rating
7.6
Reviews Sentiment
7.5
Number of Reviews
39
Ranking in other categories
No ranking in other categories
Qualys Web Application Scan...
Ranking in Static Application Security Testing (SAST)
9th
Average Rating
7.8
Reviews Sentiment
6.9
Number of Reviews
38
Ranking in other categories
Application Security Tools (12th)
 

Mindshare comparison

As of April 2025, in the Static Application Security Testing (SAST) category, the mindshare of OWASP Zap is 5.1%, down from 5.8% compared to the previous year. The mindshare of Qualys Web Application Scanning is 2.2%, down from 2.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Static Application Security Testing (SAST)
 

Q&A Highlights

MK
Jan 23, 2020
 

Featured Reviews

Amit Beniwal - PeerSpot reviewer
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.
SubhajitAich - PeerSpot reviewer
A stable solution that can be used for infrastructure vulnerability scanning and web application scanning
Qualys Web Application Scanning is very complex to use, and its graphical interface is not very user-friendly. Compared to other solutions like Tenable and Rapid7, you need to navigate a lot to get the actual results out of Qualys Web Application Scanning. If I have to search for one thing within the entire console, I have to look for it randomly. It's not very easy and very comfortable to find something. Overall, it's a very good solution, but it will be very good if the tool is more user-friendly.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"​It has improved my organization with faster security tests.​"
"The application scanning feature is the most valuable feature."
"The API is exceptional."
"OWASP Zap is a good tool, one of my favorites for a long time, and I would recommend it."
"One valuable feature of OWASP Zap is that it is simple to use."
"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."
"Two features are valuable. The first one is that the scan gets completed really quickly, and the second one is that even though it searches in a limited scope, what it does in that limited scope is very good. When you use Zap for testing, you're only using it for specific aspects or you're only looking for certain things. It works very well in that limited scope."
"Automatic updates and pull request analysis."
"Automated scanning has significantly improved our web application security management by reducing manual work."
"The most valuable feature is that we are able to scan the services and put credentials like a user ID password. We can verify the vulnerability level."
"Key features include: Cloud-based, so the installation is not so tedious. Easily deployed. Highly scalable. Comprehensive reporting."
"The feature that I have found most valuable is the progressive scan. It is good. It's done in 24 hours."
"The interface is user-friendly and easy to understand."
"​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.​"
"Qualys Web Application Scanning is accurate and provides minimal false positives."
"It combines both web application vulnerability management and internal vulnerability management on one platform and dashboard. Usually, you have to purchase separate tools."
 

Cons

"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."
"The documentation needs to be improved because I had to learn everything from watching YouTube videos."
"The technical support team must be proactive."
"It would be nice to have a solid SQL injection engine built into Zap."
"There are areas for improvement with OWASP Zap, particularly in the alignment of vulnerabilities concerning CVSS scores."
"It would be beneficial to enhance the algorithm to provide better summaries of automatic scanning results."
"There isn't too much information about it online."
"It is unclear how to build automation on Qualys. We do some automation, but not fully, because working is difficult."
"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."
"New features need to be added, specifically LLM-based solutions."
"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 software’s pricing could be improved."
"The reporting contains too many false positives."
"I have dealt with Qualys's technical support, and any enhancements are challenging. I would rate them a five out of ten."
"We have many websites. We don't force scanning on all of them at once because it's taking some time."
 

Pricing and Cost Advice

"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. 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."
"It is open source, and we can scan freely."
"This is an open-source solution and can be used free of charge."
"The tool is open source."
"It is highly recommended as it is an open source tool."
"This solution is open source and free."
"We are on an annual license for the solution and the pricing could be more affordable."
"From my perspective, it is a budget-friendly option."
"I rate the software’s pricing a six out of ten."
"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."
"The product has a very good licensing model."
"Try the free trial of the product to understand the basic working mechanisms.​"
"The product pricing is fair and reasonably priced."
"It is an expensive platform."
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Top Industries

By visitors reading reviews
Computer Software Company
18%
Financial Services Firm
12%
Manufacturing Company
8%
Government
7%
Computer Software Company
17%
Financial Services Firm
15%
Manufacturing Company
11%
Government
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
 

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 needs improvement with Qualys Web Application Scanning?
I would like it to be cheaper because it is a bit expensive compared to competitors like Tenable Nessus ( /products/tenable-nessus-reviews ). After using the product for a year, I might have more s...
 

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 2025.
845,040 professionals have used our research since 2012.