Who is Browser Kitten for?

Browser Kitten is a consumer product built for firefox users who want a playful browser customization.

Is Browser Kitten free?

Yes — Browser Kitten is free to use.

What platforms does Browser Kitten run on?

Browser Kitten runs on the web and embeddable surfaces.

Is Browser Kitten still active?

Unverified. Browser Kitten 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 Browser Kitten?

Similar projects tracked by PulseGate include Mouse Pet, Tabby Cat update for Firefox, and Cats.

Who makes Browser Kitten?

Browser Kitten is developed by thedoctor.

How long has Browser Kitten been around?

Browser Kitten first shipped in 2025.

Back to the index

Browser Kitten

Name: Browser Kitten
Author: thedoctor

mozilla.orgOther games

Browser Kitten is a lightweight Firefox extension that adds a cat character that chases the mouse cursor across websites. Users can toggle it on or off from the popup, and the extension does not include ads or tracking.

FreeWebEmbeddable

Visit mozilla.org

Overview

5 features

In the Other games space, Browser Kitten takes a focused approach. It focuses on adding a lightweight, playful desktop cat that follows the cursor while browsing the web. Browser Kitten is a consumer product aimed at firefox users who want a playful browser customization. Browser Kitten costs nothing to use. It ships for the web and embeddable surfaces.

thedoctor builds and maintains Browser Kitten, and it first shipped in 2025. Among its 5 catalogued features are cursor-following cat, website-wide support, and popup toggle. The interface is available in 32 languages, including Czech, German, and Greek.

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

Cursor-following cat
Website-wide support
Popup toggle
No ads
No tracking

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

Indexed15 Sep · 18:58 UTC
Browser Kitten verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Browser Kitten

What is Browser Kitten?: Browser Kitten focuses on adding a lightweight, playful desktop cat that follows the cursor while browsing the web. It is catalogued under Other games on PulseGate.
Who is Browser Kitten for?: Browser Kitten is a consumer product built for firefox users who want a playful browser customization.
Is Browser Kitten free?: Yes — Browser Kitten is free to use.
What platforms does Browser Kitten run on?: Browser Kitten runs on the web and embeddable surfaces.
Is Browser Kitten still active?: Unverified. Browser Kitten 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 Browser Kitten?: Similar projects tracked by PulseGate include Mouse Pet, Tabby Cat update for Firefox, and Cats.Mouse Pet Tabby Cat update for Firefox Cats
Who makes Browser Kitten?: Browser Kitten is developed by thedoctor.
How long has Browser Kitten been around?: Browser Kitten first shipped in 2025.

At a glance

Pricing: Free
Platforms: Web
Built for: Firefox users who want a playful browser customization
Model: B2C
Solves: Adding a lightweight, playful desktop cat that follows the cursor while browsing the web.

Registered as

Firefox Add-ons: browser-kitten

Developer

thedoctor

Index record

Indexed: 15 Sep 2026
Lifecycle: Alive
Last seen: 15 Sep 2026

Identity audit (13)

Slug: browser-kitten-mozilla-org
Lifecycle state recorded: 15 Sep 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 15 Sep 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: 15 Sep 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/browser-kitten

Ship this? Send a correction — no account, and you get a link to follow it.

Similar projects

Closest matches by what these projects do