Discover best Firefox Extension softwares, apps and websites.
Pencil Project is a free and open-source GUI prototyping tool that helps designers and developers create wireframes and mockups easily. Available as a standalone application and a Firefox extension, it offers a wide range of built-in shapes and templates for various platforms.
A feature-rich browser extension for Firefox that allows users to effortlessly download YouTube videos and convert them to various audio and video formats, including MP3 and MP4. It's an open-source solution designed for simplicity and efficiency in media acquisition.
DownThemAll! is a powerful browser extension designed to streamline and accelerate your file downloads. Integrating seamlessly with your web browser, it offers advanced features like multiparty downloads, pauses and resumes, and customizable filtering to manage your downloads efficiently and significantly improve download speed.
SemanticScuttle is an open-source, self-hosted social bookmarking system that emphasizes structured tagging and collaborative knowledge management. It allows users to save, organize, and share bookmarks with a strong focus on semantic relationships between tags.
LanguageTool is an extensive open-source proofreading tool designed for individuals and businesses, supporting a large number of languages. It offers crucial grammar, style, and spell checking capabilities across various platforms through browser extensions, desktop applications, and integrations.
Firebug was a powerful, open-source web development tool tightly integrated with the Firefox web browser. It provided a comprehensive environment for debugging, editing, and monitoring HTML, CSS, and JavaScript live on any web page.
cliget is a Firefox browser extension that simplifies the process of generating command-line download commands (curl and wget) for resources accessed within your browser. This is particularly useful for downloading files that require specific browser cookies or headers, allowing you to seamlessly transfer downloads to remote machines or use advanced download managers.
Adblock Plus is a widely used browser extension that effectively blocks intrusive ads, pop-ups, and tracking scripts across various websites, providing a cleaner and faster browsing experience.
Element Hiding Helper for Adblock Plus is a specialized Firefox extension designed to complement Adblock Plus, enabling users to easily hide specific elements on web pages that are not blocked by standard ad filters. This provides enhanced customization and control over your browsing experience, removing intrusive sections or blank spaces left by blocked ads.
Random Agent Spoofer is a Firefox add-on designed to enhance user privacy by regularly changing browser identifiers. It aims to combat browser fingerprinting techniques used by websites to track users across the web.
Disconnect is a robust tool designed to enhance online privacy by visualizing and blocking the invisible tracking technologies that follow your browsing and search history across the web. Available as a browser extension and other privacy-focused solutions, it aims to significantly reduce the amount of personal data collected by third-party trackers.
FireGestures is a powerful and highly customizable Firefox extension that allows users to control their browser with intuitive mouse gestures, significantly enhancing browsing speed and efficiency for legacy Firefox versions.
Save Text To File is a simple yet powerful Firefox add-on designed to streamline the process of saving selected text from web pages directly to a file. It integrates seamlessly into your browser's context menu, providing a quick and efficient alternative to traditional copy-pasting and file creation.
Disconnect Search is a privacy-focused search engine and browser extension that prevents major search engines from tracking your searches and location. It routes your searches anonymously through Disconnect's servers, protecting your privacy while allowing you to utilize popular search providers like Google, Bing, and DuckDuckGo.
Firefox PDF Viewer (PDF.js) is an open-source, web standards-based PDF viewer embedded directly within the Firefox browser. It allows users to view PDF documents seamlessly without the need for external software or plugins, enhancing browser-based document handling and accessibility.
Mailvelope is a free and open-source browser extension for Chrome and Firefox that brings end-to-end encryption to your existing webmail services using the OpenPGP standard. It allows users to encrypt, decrypt, and digitally sign emails directly within their web browser, enhancing privacy and security without requiring a change in email provider.
Add to Search Bar is a Firefox extension that simplifies the process of adding custom search engines directly to your browser's search bar, allowing for quick access to search functionalities from various websites.
FlashGot is a powerful, free, and open-source browser extension for Mozilla Firefox designed to improve download management. It integrates seamlessly with various external download managers, allowing users to handle single and massive downloads more efficiently and effectively than the browser's native functionality.
UnMHT is a essential Firefox and SeaMonkey add-on that provides comprehensive support for reading and writing MHTML (MHT) and MAFF files. It allows users to save complete web pages, including HTML, images, and other embedded content, as a single file for easy offline access and archiving.
Bluhell Firewall is a highly efficient and lightweight ad and tracker blocker designed as a browser extension for Firefox and Thunderbird. It prioritizes user privacy and browsing speed with minimal resource usage.
uMatrix is a browser extension that functions as a powerful point-and-click matrix-based firewall and privacy-enhancement tool. It provides granular control over what resources are loaded by your browser, allowing users to block or allow requests based on type, origin, and destination, helping to protect privacy and improve browsing security.
Karma Blocker is a Firefox browser extension designed to help users minimize online distractions and enhance focus while browsing. By selectively blocking elements and websites, it aims to create a more productive and less overwhelming internet experience.
KeeFox is a powerful Firefox extension that integrates seamlessly with KeePass, a free and open-source password manager. It provides secure storage and automatic filling of login details, enhancing both convenience and security for your online accounts within the Firefox browser.
uBlock is a powerful, yet lightweight, content blocker available as a browser extension for various platforms. It effectively blocks ads, trackers, and malware sites, enhancing privacy and improving browsing speed. Although currently discontinued, its effectiveness and open-source nature made it a popular choice for users seeking a cleaner web experience.
<p>NetVideoHunter is a versatile music and video downloader available primarily as a browser extension for Firefox, Chrome, and Edge. It specializes in capturing media from popular platforms like YouTube, Vimeo, Metacafe, and Facebook, offering a convenient way to save online videos and audio for offline access.</p>
PassIFox & ChromeIPass are browser extensions that provide seamless integration with KeePass and KeePassXC password managers. They allow users to store, manage, and automatically fill online credentials directly from their browser, enhancing security and convenience.
Adblock Edge was a browser extension designed to block advertisements within web pages. Primarily focused on Microsoft Edge (formerly Project Spartan), it aimed to provide users with a cleaner, faster browsing experience by preventing the loading of various ad formats.
Update Scanner is a long-standing and reliable Firefox extension designed to monitor web pages for content changes. It's particularly useful for tracking updates on websites that do not offer traditional Atom or RSS feeds, providing a simple and efficient way to stay informed about modifications.
Lightbeam for Firefox is a powerful Firefox add-on that visually demonstrates your interactions with first- and third-party sites across the web, highlighting potential tracking connections.
Greasemonkey is a highly influential and versatile Firefox extension that empowers users to personalize and enhance their web browsing experience by installing custom scripts. These scripts can modify web page content, alter layouts, add new functionalities, and automate tasks, effectively customizing how users interact with websites.