ZAP

Security & privacy

Free & open sourceEditorial overview
A CLOSER LOOK

What is ZAP?

ZAP is a web-application security testing tool that intercepts HTTP traffic, analyzes responses, and runs automated scanning workflows, helping developers and testers investigate weaknesses in applications they are authorized to assess during development.

Intercepting proxy

Passive analysis

Active scanning

Automation framework

Is it a good fit?

Best suited to

Developers testing the security of their own web applications

Before you choose

Active scans can change application state. Findings need verification and prioritization.

Editorial assessment based on the provider’s published information. Our method

Know what you're signing up for.

The listed ZAP software is available without a license fee under Apache-2.0. Included capabilities cover intercepting proxy, passive analysis, active scanning. Free testing tool; target environments, CI capacity, and professional assessment services are separate.

Free testing tool; target environments, CI capacity, and professional assessment services are separate.

Check current official pricing

The useful parts. The trade-offs.

Why consider it

Combines manual and automated testing

Fits local and CI workflows

What to keep in mind

Active scans can change application state

Findings need verification and prioritization

How to use it well

ZAP is a useful option for developers testing the security of their own web applications. Proxy a test browser through ZAP and inspect passive findings before launching any active scan. Start with a small, representative task so you can check the results before extending the setup.

Use a staging environment with clear scope and authentication settings, and reproduce important findings before adding regression checks. Consider the practical trade-off: active scans can change application state.

A few things you might be wondering.

Is ZAP free?

The listed ZAP software is available without a license fee under Apache-2.0. Included capabilities cover intercepting proxy, passive analysis, active scanning. Free testing tool; target environments, CI capacity, and professional assessment services are separate.

What is the difference between passive and active scans?

Passive analysis reviews observed traffic; active scanning sends additional test requests to the target.

Can ZAP run in automation?

Yes. Its automation framework and other interfaces support repeatable scanning workflows.

Where can I check the latest prices?

Use the provider link on this page. Billing period, location, team size, promotions, taxes, and optional extras may affect the amount you pay.

How should I compare this tool with alternatives?

Choose tools for the same task, then compare their feature limits, platform support, and total cost for your team. The Compare button helps you keep a shortlist.

Are the user reviews moderated?

Yes. New reviews are submitted for moderation. We show published user reviews separately from the editorial overview and never assign a default user rating.

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