Firefox add-ons with "Data" tag

This extension adds Ecosia.org as the default search engine to your browser — it’s completely free!

Save up to 95% memory and reduce tab clutter

Keeper is the world's most trusted password manager that secures, stores and autofills your passwords, passkeys and sensitive data across all devices with best-in-class encryption and 24/7 expert support.

🟦 Ultimate Speed Dial with ✅ advanced features for power users! 📈 Increase your productivity with ☁ Cloud dials on all your devices! 📁 Folders support, Live dials, Multi-dials, Text dials, Top pages, Timer, 🔐 E2E encryption and many more

様々なオンライン行政サービスで、マイナンバーカードを利用するためのアプリケーションです。

Web Scraper is a website data extraction tool. You can create a sitemaps that map how the site should be navigated and from which elements data should be extracted. Then you can run the scraper in your browser and download data in CSV.

Archive webpage with Archive Today

List open tab URLs and titles, copy them to clipboard or save them to a file. Features: custom format (Markdown, HTML…), RegExp tab filter, group by window/tab group.

Monitors new studies on Prolific.

Save hours with a complete toolkit in one SEO extension. Insights for on-page, keyword research, and link analysis on any webpage.

An extension necessary for carrying out Netpanel study.

Find interesting things in the webpage's source code or JavaScript

Turn opponent data into a tactical advantage - veto predictions, win probability, position heatmaps, and more in your matchroom.

Formats JSON automatically! Open Source, Available with 60+ Themes, Syntax Highlighting, automatically linkifies links and more.

Web media sniffing tool

This is an extension that allows you to easily check SEO-related meta information and copy it with one click.

Productivity tools for Salesforce.com administrators and developers to inspect data and metadata.

Extensão para download de arquivos XML e PDF da Nota Fiscal de Serviço Eletrônica NFSe filtradas por período.

Fix slow, laggy ChatGPT tabs in Firefox. Local-only extension that speeds up long conversations by trimming old messages from the page (no data leaves your browser).

Secure the management of your professional passwords with the LockPass extension. Certified and sovereign European solution.

Export conversations and artifacts from Claude.ai

DataTool is a specialized video downloader designed to help users download high-quality video content from popular social platforms like Xiaohongshu (Little Red Book), Douyin (TikTok China), YouTube, TikTok,, and Instagram.

Nightfall AI: AI-Powered Data Loss Prevention for Your Sensitive Data

See where X accounts post from and what device they use. Country flags, device icons, and VPN/proxy signals inline, plus location-aware filtering.

Automatically sync all your Faceit CS2 matches to Leetify. Set your username once and forget about manual uploads forever.