Mozilla Firefox Plugins, Add-ons and extension Page 9 of 83

Stylish lets you customize any website with custom user styles (themes for websites). Choose from the largest userstyles library to change the color scheme, background, and skin for Google, Facebook, YouTube and many, many more sites.

USBridge Remote bridges the gap between traditional software-based remote desktops and hardware-based KVM control, all within a single, unified, open-source interface. Whether you need to fix a server's BIOS or play games remotely without lag, this is the tool to handle it...

Linguist is a browser extension that translates pages and text, potentially replacing your current translation service. It offers real-time page translation, selected text translation, manual input translation, and a dictionary to save important translations.

Convert files like images, videos, documents, audio and more to other formats with this free and fast online converter.

Gecko is the name of the layout engine developed by the Mozilla Project. Gecko's function is to render web content, such as HTML, CSS, XUL, JavaScript, and render it on the user's screen or print it.

Open source solution to protect your personal email address. Generous free plan with uncapped bandwidth and infinite sends/replies, self-hostable, lot of powerful features, open roadmap, you can count on SimpleLogin to guard your email inbox.

Wikiwand is a modern interface for web and mobile, that optimizes Wikipedia's amazing content for a quicker and significantly improved reading experience.

RoboForm is a robust password management software that simplifies the task of securely storing and syncing passwords across various devices and browsers, including Firefox, Chrome, Safari, Opera, Edge, Android, and iOS.

This add-on allows users to prevent websites from using the Javascript <canvas> API to fingerprint them. Users can choose to block the <canvas> API entirely on some or all websites (which may break some websites) or just block or fake its fingerprinting-friendly...

Online bookmark manager. Store your favorite bookmarks online. Available everywhere. Private. Customizable. Fast.

AdBlitz automatically skips skippable ads and accelerates non-skippable ones, ensuring you enjoy uninterrupted content seamlessly. Remember, it's not an ad blocker.

Privacy Possum monkey wrenches common commercial tracking methods by reducing and falsifying the data gathered by tracking companies.

Amplenote allows you to take notes and link those notes to functional task and contacts lists for seamless project management. It supports integration with Google and Outlook calendars to schedule tasks and allows e-mail integration as well.

Setup YouTube playback, layout and new features for Youtube once today and enjoy that for years! With our browser extension you have 42+ useful unique features to use with Youtube.

With a single click on the lamp button, the page will fade to dark. And automatically focus on the video. By clicking on it again, the page will return to normal. It works for all known video sites such as YouTube, Vimeo, Dailymotion, YouKu, etc.

Commercial browser extension for downloading full-sized images in bulk from most web galleries, with previews, support for major hosting sites, and no complex setup.

Midnight Lizard web-extension for Google Chrome™ and Mozilla Firefox™ provides custom color schemes for all websites.

Gopeed (full name Go Speed), a high-speed downloader developed by Golang + Flutter, supports (HTTP, BitTorrent, Magnet) protocol, and supports all platforms. In addition to basic download functions, Gopeed is also a highly customizable downloader that supports implementing more...

Inkdrop is an AI-native Markdown note-taking app for developers, available on macOS, Windows, Linux, iOS, and Android, with end-to-end encrypted sync.

A browser extension and userscript that finds larger or original versions of images for thousands of supported websites

PrintFriendly cleans and formats web pages for perfect print experience. PrintFriendly removes Ads, Navigation and web page junk, so you save paper and ink when you print. It's free and easy to use. Perfect to use at home, the office, or whenever you need to print a web page.

Organizes browser tabs into smart workspaces for projects, meetings, and workflows to reduce clutter, improve focus, and simplify context switching.

An open source Adobe Flash Player implementation, designed from the ground up to be efficient on current and (hopefully) future hardware.

Boost coding productivity with efficient AI-enhanced context-aware tools. Sourcegraph streamlines complex codebases for larger developer teams.

Redirector is a browser add-on for Firefox, Chrome, Edge and Opera. The add-on lets you create redirects for specific webpages, e.g. always redirect http://bing.com to http://google.com. It was originally done by request for someone on the Mozillazine forums.