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The Top 1,037 Firefox Addon Open Source Projects on Github

Categories > Web Browsers > Firefox Addon
Bypass Paywalls Chrome ⭐ 18,323
Bypass Paywalls web browser extension for Chrome and Firefox.
Refined Github ⭐ 15,858
Browser extension that simplifies the GitHub interface and adds useful features
Darkreader ⭐ 11,423
Dark Reader Chrome and Firefox extension
Ext Saladict ⭐ 8,057
🥗 All-in-one professional pop-up dictionary and page translator which supports multiple search modes, page translations, new word notebook and PDF selection searching.
Simpread ⭐ 5,099
简悦 ( SimpRead ) - 让你瞬间进入沉浸式阅读的扩展
Medium Unlimited ⭐ 4,262
A browser extension to read medium.com articles for free without membership.
Singlefile ⭐ 4,198
Web Extension for Firefox/Chrome/MS Edge and CLI tool to save a faithful copy of an entire web page in a single HTML file
Daily ⭐ 4,083
The home page every developer deserves 👩🏽‍💻
Fehelper ⭐ 3,642
😍FeHelper--Web前端助手（Awesome！Chrome & Firefox & MS-Edge Extension, All in one Toolbox!）
Surfingkeys ⭐ 3,630
Map your keys for web surfing, expand your browser with javascript and keyboard.
Memex ⭐ 3,283
Browser Extension to full-text search your browsing history & bookmarks.
Reddit Enhancement Suite ⭐ 3,254
Reddit Enhancement Suite
Jjb ⭐ 3,008
一个帮助你自动申请京东价格保护的chrome拓展
Bypass Paywalls Firefox ⭐ 2,967
Bypass Paywalls for Firefox
Extension Boilerplate ⭐ 2,883
⚡️ A template for building cross browser extensions for Chrome, Opera & Firefox.
Pt Plugin Plus ⭐ 2,663
PT 助手 Plus，为 Google Chrome 和 Firefox 浏览器插件（Web Extensions），主要用于辅助下载 PT 站的种子。
Hack Tools ⭐ 2,570
The all-in-one Red Team extension for Web Pentester 🛠
Floccus ⭐ 2,500
☁️ Sync your bookmarks across browsers via Nextcloud, WebDAV or Google Drive
Treestyletab ⭐ 2,388
Tree Style Tab, Show tabs like a tree.
Rsshub Radar ⭐ 2,217
🍰 Browser extension that simplifies finding and subscribing RSS and RSSHub
Metastream ⭐ 1,814
Watch streaming media with friends.
Simplify ⭐ 1,642
Issue tracker for Simplify Gmail, a browser extension to simplify Gmail's interface
Github Hovercard ⭐ 1,581
Neat hovercards for GitHub.
Youtube Extension ⭐ 1,532
YouTube Extension 🎧80+Features🧰Please⭐document, code or donate📌Tidy📌Longest-standing©️2012. Users👨‍👩‍👧‍👧380,000+ ⚙️⋮⏯️🎞️☕🎛️🔴🎬🔊🎨🧩🧪📈Player: Repeat Screenshot Rotate; Hide related video distraction. Always expand video Description. Playback speed. Video Quality bandwidth H.264 electricity. Player Size Full Window. Themes Customization. Statistics. Playlist Reverse YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube Youtube enhancer YouTube app YouTube video YouTube YouTube YouTube api v3 YouTube playback YouTube player VP8 VP9 AV1 vidIQ tubebuddy download adblocker adblock ads sponsorblock addon youtube music ⭐ youtube premium css css4 html5 ytdl youtube-dl invidious iridium ParticleCore youtube+ youtube++ youtube-plus maia-yt youtube nonstop youtube control center vlogger vlog h264ify h264 m.youtube.com music.youtube.com studio.youtube youtube mobile youtube studio ⭐ kids Vanced gaming.youtube.com gaming youtubecenter freetube lite-youtube-embed newpipe youtube-dl-gui mps-youtube nuclear pytube awesome youtubers youtube downloader 8k 4k 60fps 30fps youtubeexplode vidgear k-lite tubebuddy adobe apple ios iphone design simplify ffmpeg premiere designer annoyance youtube upload
Fx_cast ⭐ 1,415
Google Cast implementation for Firefox
Notifier For Github ⭐ 1,368
Browser extension - Get notified about new GitHub notifications
Authenticator ⭐ 1,242
Authenticator generates 2-Step Verification codes in your browser.
Edgetranslate ⭐ 1,227
A translation extension.
Gitako ⭐ 1,212
🐙 File tree extension for GitHub on Chrome & Firefox & Edge
Awsconsolerecorder ⭐ 1,118
Records actions made in the AWS Management Console and outputs the equivalent CLI/SDK commands and CloudFormation/Terraform templates.
Web Extension Starter ⭐ 1,116
🖥🔋Web Extension starter to build "Write Once Run on Any Browser" extension
Data Selfie ⭐ 1,001
Data Selfie - a browser extension to track yourself on Facebook and analyze your data.
Ekill ⭐ 970
Chrome/Firefox extension to nuke annoying elements in a web page
Tabliss ⭐ 962
An extensible New Tab web extension written in TypeScript, React and Redux.
Aws Extend Switch Roles ⭐ 960
Extend your AWS IAM switching roles by Chrome extension, Firefox add-on, or Edge add-on
Tab Session Manager ⭐ 959
WebExtensions for restoring and saving window / tab states
Toggl Button ⭐ 953
Toggl Button extension for Chrome and Firefox
Just Read ⭐ 915
A customizable read mode web extension.
Gooreplacer ⭐ 874
⚡️⚡️A browser extension to modify HTTP requests :-)
Nighttab ⭐ 873
A neutral new tab page accented with a chosen colour. Customise the layout, style, background and bookmarks with nightTab.
Saka Key ⭐ 760
A keyboard interface to the web
Bettertweetdeck ⭐ 691
A browser extension to improve TweetDeck with a lot of features
Web Search Navigator ⭐ 617
Chrome/Firefox extension that adds keyboard shortcuts to Google, YouTube, Github, Amazon, and others
Mmra ⭐ 607
Make Medium Readable Again — a browser extension
Chrome Utm Stripper ⭐ 601
Browser extension that strips Google Analytics (UTM) parameters, and various other click tracking tokens, from URL query strings
Refined Hacker News ⭐ 597
✨ Hacker News, but refined — Interface tweaks and features to make the HN experience better
Refined Bitbucket ⭐ 589
Chrome and Firefox extension that improves Bitbucket's user experience
Npmhub ⭐ 570
🔎 A browser extension to explore npm dependencies on GitHub repos
Temporary Containers ⭐ 568
Firefox Add-on that lets you open automatically managed disposable containers
Read Aloud ⭐ 540
An awesome browser extension that reads aloud webpage content with one click
Auto Tab Discard ⭐ 531
Use native tab discarding method to automatically reduce memory usage of inactive tabs
Gesturefy ⭐ 525
Navigate, operate, and browse faster with mouse gestures! A customizable Firefox mouse gesture add-on with a variety of different commands.
Markdown Viewer ⭐ 502
Markdown Viewer / Browser Extension
Webscrapbook ⭐ 479
A browser extension that captures web pages to local device or backend server for future retrieval, organization, annotation, and edit. This project inherits from ScrapBook X.
Darkness ⭐ 476
Dark Themes for Popular Websites
Simple Translate ⭐ 469
WebExtensions for translating text on web pages
Tusk ⭐ 456
🐘 🔒 KeePass-compatible browser extension for filling passwords.
Svg Screenshots ⭐ 431
📸🧩 Browser extension to take scalable, semantic, accessible screenshots of websites in SVG format.
Native Client ⭐ 429
Native Messaging component for Windows, Linux, and Mac OS that is written in NodeJS.
Tracy ⭐ 407
A tool designed to assist with finding all sinks and sources of a web application and display these results in a digestible manner.
Fake Filler Extension ⭐ 407
A browser extension for Chrome, Edge and Firefox that fills dummy text in all input fields in a page.
Browser Addon ⭐ 392
Kee adds free, secure and easy password management features to your browser which save time and keep your private data more secure.
Contributors On Github ⭐ 389
🌵 Show stats about contributors on github
Lovely Forks ⭐ 388
💚 🍴 Show notable forks of GitHub repositories under their names.
Easy To Rss ⭐ 386
🚀 Chrome/Firefox Extension to retreive RSS feeds URLs from WebSite, RSSHub supported
Codercalendar ⭐ 346
DEPRECATED -> Checkout nishanthvijayan/CoderCalendar-Extensions
Extanalysis ⭐ 335
Browser Extension Analysis Framework - Scan, Analyze Chrome, firefox and Brave extensions for vulnerabilities and intels
Minimal Twitter ⭐ 321
Minimal Theme for the new Twitter UI 🐦
Firefox Scripts ⭐ 311
userChromeJS / autoconfig.js and extensions
Spotify Lyrics ⭐ 301
🎉 Desktop Spotify Web Player Instant Synchronised Lyrics
Firefoxpwa ⭐ 300
A tool to install, manage and use Progressive Web Apps (PWAs) in Mozilla Firefox
Instagramdownloader ⭐ 294
Firefox and Chrome Extention which creates an download button for instagram images and videos and videos
Pywalfox ⭐ 284
Dynamic theming of Firefox (and Thunderbird) using your Pywal colors
Git Master ⭐ 276
Git Master Extension for git file tree, support GitHub、GitLab 、 Gitee、Gitea、Gogs
Dollchan Extension Tools ⭐ 266
The best way to browse imageboards
Turbo Download Manager ⭐ 262
a multi-browser download manager with multi-threading support
Scratchaddons ⭐ 261
All-in-one browser extension for Scratch.
Startpage ⭐ 256
A minimal starpage for Chrome and Firefox
Slick Fox ⭐ 248
🦊 A firefox config that has rounded tabs and a url bar that can disappear when not selected on. It works with any theme.
Panorama Tab Groups ⭐ 239
An add-on for Firefox that implements the old Tab Groups/Panorama functionality
Bandwidth Hero ⭐ 234
💂 Saves data by compressing images on web page
Reddit Wherever ⭐ 233
Reddit Wherever Browser Extension
What Have You Made Today ⭐ 230
Chrome & FireFox extension to replace the default home page. What have you made today?
Twitch Hls Adblock ⭐ 229
Block advertisements that are inserted in Twitch streams directly.
Blocktube ⭐ 225
YouTube™ content blocker
Wallabagger ⭐ 224
Chrome / Firefox / Opera plugin for wallabag v2.
Sessionsync ⭐ 212
SessionSync
Mue ⭐ 211
Fast, open and free-to-use new tab page for modern browsers
Globalspeed ⭐ 211
Web extension to set a default speed for video and audio
Stream Detector ⭐ 210
A Firefox addon written in JavaScript which provides an easy way to keep track of URLs to playlists and subtitles used by Apple HLS, Adobe HDS, MPEG-DASH, and Microsoft Smooth Streaming streams.
Simpread Little ⭐ 207
简悦( SimpRead ) · 轻阅版
Oldschool Github Extension ⭐ 202
Revert GitHub's UI back to its classic look (before the June 23, 2020 update that has a flat, rounded and more whitespaced design).
Azure Mask ⭐ 200
A browser extension (Chrome, Firefox) that toggles concealment of sensitive information found in the Azure Portal web page such as Subscription Id's
Svg Gobbler ⭐ 191
Open source browser extension that makes designing and developing easier by finding, processing, exporting, optimizing, and managing SVG content.
Updatescanner ⭐ 170
Firefox addon to monitor web pages for updates.
Side Auto_sci Hub ⭐ 167
Cross-Browser Plugin to open Sci-Hub 🗝 page with the article from your current tab
Nas Download Manager ⭐ 167
An open source browser extension for adding/managing download tasks to your Synology DiskStation.
Tab Stash ⭐ 165
Firefox extension to save and restore tabs as bookmarks
Dictionaries ⭐ 163
One dictionary to rule them all -- a browser extension to help you learn languages
Alfred Firefox ⭐ 163
Search and control Firefox from Alfred
1-100 of 1,037 projects

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Advertising 📦 9
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Application Programming Interfaces 📦 120
Applications 📦 181
Artificial Intelligence 📦 72
Blockchain 📦 70
Build Tools 📦 111
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Mathematics 📦 55
Media 📦 228
Messaging 📦 97
Networking 📦 304
Operating Systems 📦 84
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Package Managers 📦 52
Programming Languages 📦 229
Runtime Environments 📦 96
Science 📦 42
Security 📦 375
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Software Performance 📦 57
Software Quality 📦 127
Text Editors 📦 45
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User Interface 📦 310
User Interface Components 📦 465
Version Control 📦 29
Virtualization 📦 68
Web Browsers 📦 38
Web Servers 📦 25
Web User Interface 📦 194
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