* [Playwright v1.64.0](https://github.com/microsoft/playwright) – Framework for web testing and automation across multiple browsers with a single API.

* [Browserless v2.57.0](https://github.com/browserless/browserless) – Remote execution of headless browsers in Docker with support for Puppeteer and Playwright.

* [Floorp Browser v12.19.0](https://github.com/Floorp-Projects/Floorp) – Browser focused on maintaining an open, private, and sustainable web, based on Mozilla Firefox.

* [MetaMask Browser Extension v13.50.0](https://github.com/MetaMask/metamask-extension) – Browser extension for interacting with Ethereum blockchain enabled websites.

* [uBlock Origin (uBO) 1.75.0](https://github.com/gorhill/uBlock) – CPU and memory-efficient content blocker for Chromium and Firefox that blocks ads, trackers, and other unwanted content.

* [SingleFile v1.31.0](https://github.com/gildas-lormeau/SingleFile) – Web Extension and CLI tool that saves complete web pages as faithful single-file HTML copies.

* [Browsertime v28.4.0](https://github.com/sitespeedio/browsertime) – Powerful Node.js tool for measuring and optimizing web performance.

* [Copy as Markdown v3.8.0](https://github.com/yorkxin/copy-as-markdown) – Browser extension that copies selections, links, images, or lists of tabs to the clipboard as Markdown.

* [RYS Remove YouTube Suggestions v4.5.0](https://github.com/lawrencehook/remove-youtube-suggestions) – Browser extension to hide recommendations, customize YouTube's interface, and reduce algorithmic distractions.

* [Adaptive Tab Bar Colour v4.3.0](https://github.com/atbc-org/Adaptive-Tab-Bar-Colour) – Dynamically adjusts Firefox’s theme colour to match the appearance of the website being viewed.

* [Progressive Web Apps for Firefox v2.20.0](https://github.com/filips123/PWAsForFirefox) – Installs, manages, and runs Progressive Web Apps in Firefox via a modified runtime, command-line tool, and browser extension.

* [Translate It v1.22.0](https://github.com/Translate-It-App/Translate-It) – A modular browser translation extension offering customizable providers and tools for text, pages, PDFs, OCR, subtitles, and live audio dubbing.

* [Tree Style Tab 4.4.9](https://github.com/piroor/treestyletab) – Extension for Firefox that organizes tabs in a tree structure for better management.

* [Grimoire Companion v1.0.0](https://github.com/goniszewski/grimoire-web-extension) – Grimoire Companion is a browser extension that captures the active page or selected tabs into a Grimoire library with negotiated integration tokens.

* [Firefox GNOME theme v157.1](https://github.com/rafaelmardojai/firefox-gnome-theme) – CSS code to style Firefox to resemble GNOME's native applications.

* [FMHY SafeGuard v1.4.5](https://github.com/fmhy/FMHY-SafeGuard) – Browser extension that categorizes websites as starred, safe, unsafe, or potentially dangerous using updated filterlists.

* [mtab v1.13.2](https://github.com/maxhu08/mtab) – Configurable new tab extension that allows customization of wallpapers, bookmarks, and animations.

* [WaveFox 0.8.158](https://github.com/QNetITQ/WaveFox) – Firefox theme for manual customization with various visual options.

* [Firefox Mod Blur v2.80](https://github.com/datguypiko/Firefox-Mod-Blur) – Modular Firefox CSS theme with support for light and dark modes and compact design.

* [Opera-GX Theme for Firefox Css v.12.3](https://github.com/Godiesc/firefox-gx) – Theme for users who love the Opera GX skin, ensuring full compatibility with the stable version of Firefox.

* [Quantum Nox Firefox Customizations FF157](https://github.com/Izheil/Quantum-Nox-Firefox-Customizations) – Firefox tweaks providing multi-row tabs, context menu and UI customizations via userChrome/CSS and JS installers.

* [Waterfox portable 6.7.3-32](https://github.com/portapps/waterfox-portable) – Windows portable package providing a Firefox-based web browser.

* [Cookie auto decline 7.7](https://github.com/JobcenterTycoon/cookie-auto-decline) – Browser extension that automatically declines cookie consent banners by clicking decline or setting required cookies in the background.

* [Phoenix 2026.09.29.2](https://github.com/celenityy/Phoenix) – Suite of configurations and advanced modifications for Mozilla Firefox that prioritize privacy, security, freedom, functionality, and usability.