Who should use WebTester?

WebTester is a consumer product built for penetration testers, bug-bounty hunters, and CTF players.

Yes — WebTester is free to use.

What platforms does WebTester run on?

WebTester runs on the web and embeddable surfaces.

Is WebTester still maintained?

Unverified. WebTester has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

What projects are similar to WebTester?

Similar projects tracked by PulseGate include Webhook Tester, WebTool, and SQL Security Tester.

WebTester is developed by Zer0droid.

When did WebTester launch?

WebTester first shipped in 2022.

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WebTester

Name: WebTester
Author: Zer0droid

mozilla.orgPenetration testing & red teaming

WebTester is a Firefox extension that provides common security payloads for testing injection vulnerabilities in web applications. It is intended for penetration testers, bug-bounty hunters, and CTF players.

FreeWebEmbeddable

Visit mozilla.org

1alternative

5features

2022since

Overview

5 features

In the Penetration testing & red teaming space, WebTester takes a focused approach. It focuses on testing web applications for common injection vulnerabilities without manually assembling security payloads. It is built as a consumer product for penetration testers, bug-bounty hunters, and CTF players. WebTester is free to use. WebTester is available on the web and embeddable surfaces.

It is developed by Zer0droid, and it first shipped in 2022. Key capabilities include payload library, injection testing, and firefox integration. The interface is available in 32 languages, including Czech, German, and Greek.

Summary written by a language model from the project’s public pages.

Payload library
Injection testing
Firefox integration
Security testing
CTF support

Built with & integrations

Runs on

BrowserEmbeddable

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed16 Sep · 11:30 UTC
WebTester verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about WebTester

What is WebTester?: WebTester focuses on testing web applications for common injection vulnerabilities without manually assembling security payloads. It is catalogued under Penetration testing & red teaming on PulseGate.
Who should use WebTester?: WebTester is a consumer product built for penetration testers, bug-bounty hunters, and CTF players.
Is WebTester free?: Yes — WebTester is free to use.
What platforms does WebTester run on?: WebTester runs on the web and embeddable surfaces.
Is WebTester still maintained?: Unverified. WebTester has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
What projects are similar to WebTester?: Similar projects tracked by PulseGate include Webhook Tester, WebTool, and SQL Security Tester.Webhook Tester WebTool SQL Security Tester
Who makes WebTester?: WebTester is developed by Zer0droid.
When did WebTester launch?: WebTester first shipped in 2022.

At a glance

Pricing: Free
Platforms: Web
Built for: penetration testers, bug-bounty hunters, and CTF players
Model: B2C
Solves: Testing web applications for common injection vulnerabilities without manually assembling security payloads.

Registered as

Firefox Add-ons: webtester

Developer

Zer0droid

Index record

Indexed: 16 Sep 2026
Lifecycle: Alive
Last seen: 16 Sep 2026

Identity audit (13)

Slug: webtester-mozilla-org
Lifecycle state recorded: 16 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 16 Sept 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model, checked against the page's own declaration.
Last updated: 16 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/webtester

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