Comparison

ZAP (Zed Attack Proxy) vs PortSwigger — Web security tools, training and research

ZAP (Zed Attack Proxy) lands on Worth it, and PortSwigger — Web security tools, training and research lands on Depends.

ZAP (Zed Attack Proxy)

Worth it

Confidence: Medium

ZAP is a no-brainer trial for security-savvy developers and pentesters . it is free and billed as the world's most widely used open-source web app scanner.

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PortSwigger — Web security tools, training and research

portswigger.net

Depends

Confidence: Low

Buy if you're a web pentester or AppSec practitioner . Burp is the de facto industry default and Community Edition is free.

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ZAP (Zed Attack Proxy) versus PortSwigger — Web security tools, training and research
Compare	ZAP (Zed Attack Proxy)	PortSwigger — Web security tools, training and research
Verdict	Worth it	Depends
Best for	Security-savvy dev teams	Web pentesters
Who it's not for	Teams wanting managed, supported DAST	Devs who just want quick automated scans
Privacy	Open-source and auditable; third-party trackers list 2026 CVEs in a ZAP add-on and the stable Docker image.¹⁰	No known public vulnerabilities found in the sources reviewed.¹⁵
Support quality	No support evidence found	No support evidence in sources
Public sentiment	Reviewers call ZAP a capable, widely adopted open-source DAST scanner that shines in hands-on manual testing.^⁸	No independent reviews in sources; only a vendor-published Microsoft testimonial calling Burp the default choice.¹⁵
Biggest gotcha	Third-party trackers report CVE-2026-57301 (CVSS 8.8); keep the tool updated¹⁰	Pricing hidden . Pro and DAST tiers aren't listed; contact sales before budgeting.¹⁵

Pick ZAP (Zed Attack Proxy) when

Security-savvy dev teams
Manual penetration testers
Startups needing free DAST
AppSec beginners learning testing

When ZAP (Zed Attack Proxy) is not a fit

Teams wanting managed, supported DAST
Non-technical buyers without security staff
Orgs needing vendor SLAs or compliance sign-off
Anyone expecting polished commercial UX

Pick PortSwigger — Web security tools, training and research when

Web pentesters
AppSec teams doing manual testing
Security learners wanting free labs
Enterprises needing DAST scanning

When PortSwigger — Web security tools, training and research is not a fit

Devs who just want quick automated scans
Non-technical teams needing set-and-forget security
Budget buyers unwilling to learn a specialist tool
Anyone needing transparent pricing upfront

Sources

Getting Started - Zed Attack Proxy (ZAP)zaproxy.org
official
Customer - ZAPzaproxy.org
official
ZAP Alert Detailszaproxy.org
official
ZAP: Open-Source FREE DAST Scannercheckmarx.com
official
ZAP review: Is it the right DAST tool for your team?beaglesecurity.com
review
The enterprise DAST alternative to ZAPstackhawk.com
news
zaproxy | Kali Linux Toolskali.org
review
ZAP by Checkmarx Reviewsg2.com
review
Can OWASP ZAP replace Burp Suite Professional?cloufish.github.io
review
CVE-2026-57301: Official Owasp Zap Vulnerability (CVSS 8.8)strix.ai
security
NVD-CVE-2026-57527 - NISTnvd.nist.gov
security
Known Vulnerabilities (CVE) in zaproxy/zap-stable:latestsliplane.io
security
ZAP is dead! Long live Zap!punksecurity.co.uk
news
ZAP (software) - Wikipediaen.wikipedia.org
news
PortSwigger . Web security tools, training and researchportswigger.net
official
Security pageportswigger.net
security