Cybersecurity · head to head
OWASP ZAP vs Zencity
OWASP ZAP
Cybersecurity
Free, open-source web application scanner and intercepting proxy, now governed by the Software Security Project.
- From
- Free
- Free plan
- Yes
Zencity
Government
Resident sentiment analysis combining organic social listening with representative surveys
- From
- On request
- Free plan
- No
The short version
- Only OWASP ZAP has a free tier, so it costs nothing to try first.
- Each has a real cost: OWASP ZAP authenticated scanning of modern single-page applications is the hard part and ZAP makes you build it by hand: session handling, token refresh and login scripts are configured per application, and a misconfigured session means the scanner logs itself out and reports a clean result for pages it never reached.; Zencity social listening is structurally biased toward residents who post, so a city using the listening product without the survey product will consistently mistake volume for consensus.
- They diverge on capability: OWASP ZAP covers Intercepting proxy, Zencity covers Organic social listening.
- Prices and features above were last checked on 31 August 2026.
Where they differ
Only the attributes on which OWASP ZAP and Zencity actually diverge.
Identical on both: user rating (Not yet rated).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in OWASP ZAP
- Intercepting proxy
- Passive scanner
- Active scanner
- AJAX spider
- Automation Framework
- Headless daemon and REST API
- Docker images
- Add-on marketplace
Only in Zencity
- Organic social listening
- Representative surveys
- Community trust surveys
- Topic and sentiment analysis
- Service request integration
- Leadership reporting
What people use each for
The jobs each tool is most often brought in to do.
OWASP ZAP
- Adding a baseline security scan to every application's pipeline where per-target commercial licensing would limit coverage to a handfulnot Zencity
- Manual penetration testing that needs an intercepting proxy, request replay and fuzzing without a paid licence per testernot Zencity
- Teaching developers what an attack against their own endpoint looks like, using a tool they can install themselvesnot Zencity
- Pre-release regression scanning of an internal application that would never justify a commercial DAST subscriptionnot Zencity
Zencity
- A city manager deciding whether a social media outcry reflects a representative viewnot OWASP ZAP
- A police department measuring community trust with a sampled instrument rather than complaint volumenot OWASP ZAP
- A communications team wanting early warning on a service issue before it reaches councilnot OWASP ZAP
- A council needing resident input on a policy without running its own survey operationnot OWASP ZAP
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
OWASP ZAP
- Authenticated scanning of modern single-page applications is the hard part and ZAP makes you build it by hand: session handling, token refresh and login scripts are configured per application, and a misconfigured session means the scanner logs itself out and reports a clean result for pages it never reached.
- There is no support contract in the product, so when a scan breaks the day before a release the escalation path is a GitHub issue and a community chat, which is not an answer that satisfies a delivery manager or an auditor who wants a named responsible party.
- Active scanning sends genuine attack traffic, so it can create records, trigger emails, exhaust rate limits or destabilise a fragile environment, and pointing it at production without prior agreement produces an incident rather than a test result.
- Output needs triage: passive rules generate large volumes of low-severity informational findings about headers and cookie flags that bury the few results that matter, and a team without someone tuning the rule set stops reading the report within a few sprints.
- As a dynamic scanner it can only test what it can reach, so authorisation flaws between accounts, business logic abuse and anything behind an undiscovered endpoint go unreported, and a passing ZAP scan is evidence of nothing more than the absence of the classes of bug it looks for.
Zencity
- Social listening is structurally biased toward residents who post, so a city using the listening product without the survey product will consistently mistake volume for consensus.
- Government analysis of residents' public speech, particularly by police departments, has drawn civil liberties criticism and records request scrutiny in United States cities, and agencies need a public answer ready before signing.
- Sentiment classification of local slang, sarcasm and non English posts is imperfect, and a misclassified theme presented in a leadership briefing can be acted on before anyone checks the underlying posts.
- Survey sample sizes at neighbourhood level are often small, so the district level breakdowns that councils most want are the least reliable numbers in the report.
- It reports on opinion without connecting to service delivery systems, so acting on a finding remains a separate manual process in whatever operational software the agency runs.
Pricing, plan by plan
OWASP ZAP
Free- Free & Open SourceFree
- Full functionality
- Active & passive scanning
- Spider
Zencity
On request- Zencity$undefined/year
- Quoted annually by population served and module scope
- Survey programmes priced separately from the listening platform
- Police community trust surveying sold as its own line
Which should you pick?
Choose OWASP ZAP if
- You need intercepting proxy.
- You want to start without paying.
- You work on Desktop, Cli, Api.
- You also want passive scanner.
Choose Zencity if
- You need organic social listening.
- You also want representative surveys.
Questions people ask
- Is OWASP ZAP or Zencity better?
- Neither clearly leads. OWASP ZAP starts at Free and Zencity at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, OWASP ZAP or Zencity?
- OWASP ZAP has a free tier; the other does not. Paid plans start at Free for OWASP ZAP and On request for Zencity.
- Does OWASP ZAP or Zencity run on more platforms?
- OWASP ZAP runs on Desktop, Cli, Api. Zencity runs on Web.
- Can I use OWASP ZAP for free?
- Yes. OWASP ZAP has a free tier, so you can try it without paying. Zencity starts at On request.
- What is OWASP ZAP best used for?
- OWASP ZAP is most often used for adding a baseline security scan to every application's pipeline where per-target commercial licensing would limit coverage to a handful, manual penetration testing that needs an intercepting proxy, request replay and fuzzing without a paid licence per tester, teaching developers what an attack against their own endpoint looks like, using a tool they can install themselves, pre-release regression scanning of an internal application that would never justify a commercial dast subscription. Of those, adding a baseline security scan to every application's pipeline where per-target commercial licensing would limit coverage to a handful and manual penetration testing that needs an intercepting proxy, request replay and fuzzing without a paid licence per tester are not what Zencity is typically brought in for.
- What can OWASP ZAP do that Zencity cannot?
- OWASP ZAP covers Intercepting proxy, Passive scanner, Active scanner, AJAX spider. Zencity covers Organic social listening, Representative surveys, Community trust surveys, Topic and sentiment analysis.
Answered from the vendors’ own pages
OWASP ZAP: Is it still called OWASP ZAP?
The project left OWASP in August 2024 and is now governed by the Software Security Project, with core development sponsored by Checkmarx. The tool is now just ZAP, though most existing documentation, courses and search results still use the OWASP name.
Zencity: Is this surveillance of residents?
It analyses publicly posted content and aggregated survey responses rather than private accounts, but the distinction has been contested publicly, especially for police use. Prepare an explanation before procurement.
OWASP ZAP: Is it free for commercial use?
Yes. It is Apache 2.0 licensed, with no per-application, per-scan or per-user cost, and it can be used and modified commercially without a licence agreement.
Zencity: Why pair listening with surveys?
Because the people who post are not representative of the people who live there. The gap between the two datasets is often the most useful output.
OWASP ZAP: Can it replace a penetration test?
No. It automates checks for known vulnerability classes against endpoints it can reach. It does not reason about business logic, chain findings into an attack, or test authorisation between accounts, which is most of what a tester actually does.
Zencity: What did Zencity acquire?
Elucd, in 2021, which brought community trust survey methodology used with police departments.
OWASP ZAP: Does it run in CI?
Yes, through the official Docker images and the Automation Framework, which defines scan jobs in YAML so configuration lives in the repository. A baseline passive scan is the usual starting point because it is fast and non-intrusive.
Zencity: Can residents find out what our city bought?
Yes. These are public contracts and several have been obtained and published through records requests.
OWASP ZAP: How does it compare to Burp Suite?
Burp Suite Professional is the more polished manual testing tool and has a stronger scanner and extension ecosystem, but it is licensed per tester and Burp Suite Enterprise per target. ZAP is the better fit where cost per target is the binding constraint; many teams use both.
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