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Cybersecurity · head to head

Entrust Identity as a Service vs OWASP ZAP

Entrust Identity as a Service logo

Entrust Identity as a Service

Cybersecurity

Workforce and customer authentication from a certificate authority

From
$2/month
Rated
-
Full reviewWebsite
OWASP ZAP logo

OWASP ZAP

Cybersecurity

Free, open-source web application scanner and intercepting proxy, now governed by the Software Security Project.

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only OWASP ZAP has a free tier, so it costs nothing to try first.
  • Each has a real cost: Entrust Identity as a Service the application integration catalogue is smaller than that of the dedicated identity vendors, so uncommon SaaS applications more often need custom SAML configuration rather than a template.; 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.
  • They diverge on capability: Entrust Identity as a Service covers Multi-factor authentication, OWASP ZAP covers Intercepting proxy.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Entrust Identity as a Service and OWASP ZAP actually diverge.

Attributes where Entrust Identity as a Service and OWASP ZAP differ
AttributeEntrust Identity as a ServiceOWASP ZAP
Starting price$2/monthFree
Pricing modelPer user per monthfree
Free tierNoYes
PlatformsWeb, iOS, Android, Windows, LinuxDesktop, Cli, Api
FoundedUnknown2001

Identical on both: user rating (Not yet rated), category (Cybersecurity).

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 Entrust Identity as a Service

  • Multi-factor authentication
  • Single sign-on
  • Adaptive authentication
  • Passwordless login
  • Credential lifecycle
  • Derived PIV credentials
  • Directory integration

Only in OWASP ZAP

  • Intercepting proxy
  • Passive scanner
  • Active scanner
  • AJAX spider
  • Automation Framework
  • Headless daemon and REST API
  • Docker images
  • Add-on marketplace

What people use each for

The jobs each tool is most often brought in to do.

Entrust Identity as a Service

  • A government agency needing derived mobile credentials from an existing PIV smart card estatenot OWASP ZAP
  • A bank that must support hardware tokens for corporate treasury users alongside push authentication for staffnot OWASP ZAP
  • An organisation already buying Entrust certificates that wants credential issuance and authentication from one vendornot OWASP ZAP
  • A defence supplier required to use certificate-based authentication that mainstream cloud identity products handle poorlynot OWASP ZAP

OWASP ZAP

  • Adding a baseline security scan to every application's pipeline where per-target commercial licensing would limit coverage to a handfulnot Entrust Identity as a Service
  • Manual penetration testing that needs an intercepting proxy, request replay and fuzzing without a paid licence per testernot Entrust Identity as a Service
  • Teaching developers what an attack against their own endpoint looks like, using a tool they can install themselvesnot Entrust Identity as a Service
  • Pre-release regression scanning of an internal application that would never justify a commercial DAST subscriptionnot Entrust Identity as a Service

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Entrust Identity as a Service

  • The application integration catalogue is smaller than that of the dedicated identity vendors, so uncommon SaaS applications more often need custom SAML configuration rather than a template.
  • Developer experience for customer identity use cases is behind the specialists, and teams building consumer signup flows will find the APIs and documentation less complete.
  • Advanced capabilities including adaptive authentication and credential management sit above the published entry price, so the two dollar figure rarely reflects what a regulated buyer actually spends.
  • There are two overlapping products, Identity as a Service and Identity Enterprise, and choosing wrongly at the start means a migration later rather than a licence change.
  • Identity governance, access certification and privileged access are not covered, so an organisation with audit-driven access review requirements needs a second vendor alongside it.

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.

Pricing, plan by plan

Entrust Identity as a Service

$2/month
  • Workforce Standard$2/month
    • Multi-factor authentication
    • Single sign-on
    • Directory integration
  • Higher tiers$undefined/month
    • Adaptive risk-based authentication
    • Certificate and smart card credential management
    • Derived PIV credentials

OWASP ZAP

Free
  • Free & Open SourceFree
    • Full functionality
    • Active & passive scanning
    • Spider

Which should you pick?

Choose Entrust Identity as a Service if

  • You need multi-factor authentication.
  • You work on Web, iOS, Android, Windows, Linux.
  • You also want single sign-on.
Entrust Identity as a Service review

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.
OWASP ZAP review

Questions people ask

Is Entrust Identity as a Service or OWASP ZAP better?
Neither clearly leads. Entrust Identity as a Service starts at $2/month and OWASP ZAP at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Entrust Identity as a Service or OWASP ZAP?
OWASP ZAP has a free tier; the other does not. Paid plans start at $2/month for Entrust Identity as a Service and Free for OWASP ZAP.
Does Entrust Identity as a Service or OWASP ZAP run on more platforms?
Entrust Identity as a Service runs on Web, iOS, Android, Windows, Linux. OWASP ZAP runs on Desktop, Cli, Api.
Can I use OWASP ZAP for free?
Yes. OWASP ZAP has a free tier, so you can try it without paying. Entrust Identity as a Service starts at $2/month.
What is Entrust Identity as a Service best used for?
Entrust Identity as a Service is most often used for a government agency needing derived mobile credentials from an existing piv smart card estate, a bank that must support hardware tokens for corporate treasury users alongside push authentication for staff, an organisation already buying entrust certificates that wants credential issuance and authentication from one vendor, a defence supplier required to use certificate-based authentication that mainstream cloud identity products handle poorly. Of those, a government agency needing derived mobile credentials from an existing piv smart card estate and a bank that must support hardware tokens for corporate treasury users alongside push authentication for staff are not what OWASP ZAP is typically brought in for.
What can Entrust Identity as a Service do that OWASP ZAP cannot?
Entrust Identity as a Service covers Multi-factor authentication, Single sign-on, Adaptive authentication, Passwordless login. OWASP ZAP covers Intercepting proxy, Passive scanner, Active scanner, AJAX spider.

Answered from the vendors’ own pages

Entrust Identity as a Service: Is MFA included or extra?

Multi-factor authentication is included in the workforce bundles rather than sold separately, which is not true of every competitor. Adaptive risk-based authentication sits in higher tiers.

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.

Entrust Identity as a Service: Does it do identity governance?

No. Access certification, role mining and joiner-mover-leaver governance require a separate product such as SailPoint or Saviynt.

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.

Entrust Identity as a Service: Why choose this over Okta or Entra ID?

Almost always because of PKI, smart cards or derived credentials. Without that requirement the mainstream platforms are the stronger general purpose choice.

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.

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.

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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