Mostra focuses on finding and switching websites to their Catalan versions manually. It is catalogued under Localisation & multilingual support on PulseGate.

Who should use Mostra?

Mostra is a consumer product built for Catalan-speaking Firefox users.

What platforms does Mostra run on?

Mostra runs on the web, embeddable surfaces, and Android.

Is Mostra still active?

Unverified. Mostra 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 Mostra?

Similar projects tracked by PulseGate include HyperMew AI Translator, MultilingualPress, and Geolocated Content.

Mostra is developed by frolesti, based in Spain.

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Mostra

Name: Mostra
Author: frolesti

mozilla.orgLocalisation & multilingual support🇪🇸

Mostra is a Firefox browser extension that detects whether a website offers a Catalan version and redirects users to it automatically. It runs entirely in the browser and does not collect or transmit personal or browsing data.

FreeWebEmbeddableAndroid

Visit mozilla.org

Overview

5 features

Mostra sits in PulseGate's Localisation & multilingual support category. It focuses on finding and switching websites to their Catalan versions manually. It is built as a consumer product for Catalan-speaking Firefox users. It is available for free. It runs on the web, embeddable surfaces, and Android.

Behind Mostra is frolesti, based in Spain, and it first shipped in 2026. Key capabilities include Automatic Catalan redirects, language detection, 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.

Automatic Catalan redirects
Language detection
Firefox integration
Firefox for Android
Privacy-focused browsing

Built with & integrations

Runs on

BrowserEmbeddableAndroid

Trust & compliance

Verified signals

HTTPSPrivacy Policy Terms of ServiceFree tierMulti-languageStore-verified publisher

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed12 Sept · 02:48 UTC
Mostra verified via Firefox Add-ons
Source: Firefox Add-ons · Open

Frequently asked questions about Mostra

What is Mostra?: Mostra focuses on finding and switching websites to their Catalan versions manually. It is catalogued under Localisation & multilingual support on PulseGate.
Who should use Mostra?: Mostra is a consumer product built for Catalan-speaking Firefox users.
Does Mostra have a free plan?: Yes — Mostra is free to use.
What platforms does Mostra run on?: Mostra runs on the web, embeddable surfaces, and Android.
Is Mostra still active?: Unverified. Mostra 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 Mostra?: Similar projects tracked by PulseGate include HyperMew AI Translator, MultilingualPress, and Geolocated Content.HyperMew AI Translator MultilingualPress Geolocated Content
Who makes Mostra?: Mostra is developed by frolesti, based in Spain.
When did Mostra launch?: Mostra first shipped in 2026.

At a glance

Pricing: Free
Platforms: Web
First seen: 12 Sept 2026
Built for: Catalan-speaking Firefox users
Model: B2C
Solves: Finding and switching websites to their Catalan versions manually.

Registered as

Firefox Add-ons: en-català-sisplau

Developer

🇪🇸frolesti

Index record

Indexed: 12 Sept 2026
Lifecycle: Alive
First seen: Sept 2026
Last seen: 12 Sept 2026

Identity audit (13)

Slug: mostra-mozilla-org
Lifecycle state recorded: 12 Sept 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 12 Sept 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
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: 12 Sept 2026
Canonical URL: https://addons.mozilla.org/en-US/firefox/addon/en-catal%C3%A0-sisplau

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