991 Open source projects that are alternatives of or similar to Vivaldi Fox

Markdown Viewer / Browser Extension

The DownThemAll! WebExtension

Browser extension adware (showHomebrewOverlayOuter)

Drop Feeds is a Sage / Sage++ like addon (webextension) for Firefox Quantum

Raw TCP and UDP Sockets API on Desktop Browsers

WebExtension that mutes all sites by default and remembers unmuted sites

Unofficial webextension for ProtonMail

Firefox add-on for arranging tabs vertically

Vertical tab design for Firefox with dynamic indentation:: Sideberry and TreeStyleTabs (Legacy) themes available!

Linguist is a powerful browser extension for translate pages and text, which are ready to replace your favorite translate service

Add-ons for Stack Exchange sites, like: askdifferent, askubuntu, serverfault, stackoverflow and superuser

A neutral new tab page accented with a chosen colour. Customise the layout, style, background and bookmarks in nightTab.

A web extension for Pixiv

A firefox addon wich goes up a folder of a website.

Swift Selection Search (SSS) is a simple Firefox add-on that lets you quickly search for some text in a page using your favorite search engines.

Computest Openrunner: Benchmark and functional testing for frontend-heavy web applications

Firefox multi-account containers are for power users. So is this. Adds bulk container interactivity features missing from the Mozilla Multi-Account Containers extension.

A browser extension to send pages and content from your browser to connected KDE Connect devices.

Frame By Frame - Chrome Extension. Move your mouse cursor over any video and use keyboard arrows to switch frames.

A browser extension starter for Chrome and Firefox

Adds mpris integration for certain sites using a Firefox Webextension.

Map your keys for web surfing, expand your browser with javascript and keyboard.

A Vim-like interface for Firefox, inspired by Vimperator/Pentadactyl.

Bypass Paywalls for Firefox

A minimal Chrome / Firefox extension to help you learn Japanese words in each new tab.

Kee adds free, secure and easy password management features to your browser which save time and keep your private data more secure.

🚀 Chrome/Firefox Extension to retreive RSS feeds URLs from WebSite, RSSHub supported

A Firefox WebExtension that displays a context menu, that searches for the selected text.

A Firefox extension for Pinboard (https://pinboard.in) that uses the WebExtension API

🖥🔋Web Extension starter to build "Write Once Run on Any Browser" extension

Search and control Firefox from Alfred

简悦 ( SimpRead ) - 让你瞬间进入沉浸式阅读的扩展

🌐 🔌 The MetaMask browser extension enables browsing Ethereum blockchain enabled websites

Japanese pop-up dictionary extension for Chrome and Firefox.

A browser extension to improve TweetDeck with a lot of features

A browser extension that adds various web developer tools to a browser.

Sieve Script Editor

Inject charts in your private leaderboard page for Advent of Code

Web Extension for handling groups of tabs persisted as bookmarks

A sample bootstrapped extension to add a Web panel sidebar.

Autofill is a small but powerful add-on for Mozilla Firefox that serves one purpose: fill form fields automatically on page load. It is for people who just want a straightforward form filler without all the bells and whistles.

Webpack plugin that compiles WebExtension manifest.json files and adds smart auto reload

Allows controlling media player on different sites with Media Player widget on your desktop

RetroTxt is the WebExtension that turns ANSI, ASCII, NFO text into in-browser HTML

An awesome browser extension that reads aloud webpage content with one click

🔴YouTube Extension🧰>80 Features ⭐Please document, code or donate📌Tidy📌Longest-standing(2012)(Users>350000)⋮🎞️🎛️🎧⚙️🎬🔊☕🎨🧩🧪📈⏯️(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. Reverse Playlist 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

A web extension that helps you view JSON documents in the browser.

Firefox and Chrome WebExtension that deletes cookies and other browsing site data as soon as the tab closes, domain changes, browser restarts, or a combination of those events.

📑 A better OneTab for Chrome 📝 Temporarily removed from firefox ⚠️ without maintaining in a period & any cooperative purpose are welcome

🛰 Experience the latest image from the Himawari, GOES, Meteosat, and DSCOVR satellites

uBlock: a fast, lightweight, and lean blocker for Chrome, Firefox, and Safari.

Don't waste your time with compliance. Universal Bypass circumvents annoying link shorteners.

Add-on/WebExtension that provides a modern emoji picker that you can use to find and copy/insert emoji into the active web page.

Adds "quality-of-life" features to NextDNS website for a more practical usability

Vietnamese input method extension (IME) for Firefox, Thunderbird, SeaMonkey, Komodo, etc. — bộ gõ tiếng Việt dành cho Firefox, Thunderbird, SeaMonkey, Komodo, …

Moved to https://github.com/ugetdm/uget-integrator and https://github.com/ugetdm/uget-extension

Echofon Unofficial - maintained version of Echofon: full featured, super clean Twitter app for Firefox.

Firefox Multi-Account Containers lets you keep parts of your online life separated into color-coded tabs that preserve your privacy. Cookies are separated by container, allowing you to use the web with multiple identities or accounts simultaneously.

Control your browser's tabs from the command line

🚀 A simple companion extension for 9anime