Mozilla Firefox Plugins, Add-ons and extension Page 17 of 78

The free Thumbnail Zoom Plus add-on for Firefox shows the full image when you hover over a thumbnail or image link.

AI-powered keyboard app for Android with ChatGPT integration, grammar correction, tone adjustment, theme customization, glide typing, over 30 languages.

TTV LOL PRO removes most livestream ads from Twitch. This is free, don't expect it to be perfect.

Bookmark, Archive, Screenshot & Markup - All-In-One Web Collector, must-have research tool

YT Siphon is a browser extension that lets you choose to open YouTube videos in alternative frontends. Instead of auto-redirecting, it gives you the power to decide with simple shortcuts.

Visual issue tracking tool enabling point-and-click feedback on web pages with contextual metadata, turning notes into trackable tasks for streamlined collaboration.

The protocol's innovations extend battle-tested ideas from Bitcoin and Ethereum:

Web browser extension adding rich shortcuts to click links/switch tabs/scroll pages or capture full page, use Chrome like vim for productivity.

Encrypts data, supports unlimited devices, offers a global server network, and ensures anonymous browsing with fast connections and cross-platform support.

enhanced-h264ify is a fork of well-known h264ify extension for Firefox/Chrome which blocks VP8/VP9 codecs on YouTube, so that you can use H264 only.

Online Radio streams for J-pop, K-pop and Anime songs.

Watch lectures ~1.5x faster by fast-forwarding long pauses between sentences.

Create, edit, delete and switch between browser profiles seamlessly in Firefox. Inspired by Chrome's profile switcher.

Owl transforms webpages with a comfortable dark theme on-the-fly, protecting your eyes from the glaring color schemes on most websites. Owl comes bundled with a ton of features. With Owl, you can:

TabSync Pro allows you to view and manage tabs remotely on other devices. This is an early version, some important features are still missing.

You can quickly create a temporary and disposable email address to verify your email. Protect your email from spam, bots, and phishing with TempMailg.

EasySubs is compatible with YouTube, Netflix (subscription required), Coursera, and Kinopub. More video streaming services coming soon!

Real-time website monitoring with every-minute checks, global locations, detailed uptime and performance reporting, customizable alerts, and incident detection.

Fraidycat is a browser extension for following folks on a variety of platforms. But rather than showing you a traditional 'inbox' or 'feed' view of all the incoming posts - Fraidycat braces itself against this unbridled firehose!

A free, full-featured podcast player with seamless device synchronization, episode downloads, offline mode and more.

This webExtension lets you use Neovim directly from your browser. Contrary to other extensions, it does not open a new OS window.

FlowCrypt (formerly CryptUp) is the easiest PGP encryption for Gmail. It behaves just like standard email, except it's encrypted.

SiteBar is an Online Bookmark Manager. Store your bookmarks on our server and access them online anywhere! Prefer a private server? Download SiteBar server for free (GPL)!

A download manager for the HTTP(S) protocol. Maximize your download throughput by utilizing high performance input/output completion ports (IOCP). HTTP Downloader can open thousands of connections at a time and consumes very little system resources.

An extension for Firefox that restores some of RSS functionality which Firefox abandoned. Functionality includes: