829 Open source projects that are alternatives of or similar to Extension

A user styles manager for Firefox and Chrome

HTTPS server running on localhost

Easier way to exempt your favorite YouTube channels from adblocking.

A browser extension starter for Chrome and Firefox

A 1Password-compatible command-line and web-based password manager

Sync automatically what you read on MangaDex.org with your MyAnimelist.net manga list.

All-in-one browser extension for Scratch.

Inject charts in your private leaderboard page for Advent of Code

Show all your chromium passwords in format ready to import in other browser like FireFox

List of standard and browser specific CSS properties.

Better code navigation in github

📊 User friendly dashboard/tool for discord bot developpers to manage servers

🥗 All-in-one professional pop-up dictionary and page translator which supports multiple search modes, page translations, new word notebook and PDF selection searching.

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

Bulk URL Opener is an application that provides the user with multiple utilities to help with managing and using large amounts of urls

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.

AdGuard browser extension

Fast, open and free-to-use new tab page for modern browsers

Press Alt+Shift+D to duplicate the current tab (Option+Shift+D on Mac).

A tool for monitoring and debugging urql during development

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

Because you have a weak spot for fonts

Dockerfiles for Python 3.6/2.7 & Selenium in a headless Chrome or Firefox environment

Cromos is a tool for downloading legitimate extensions of the Chrome Web Store and inject codes in the background of the application.

[NOT MAINTAINED] Please use <https://github.com/SeleniumHQ/docker-selenium>

A global domain based database for NoScript, uBlock, uMatrix & ScriptSafe

An open source browser extension for adding/managing download tasks to your Synology DiskStation.

⚡️⚡️A browser extension to modify HTTP requests :-)

A simple zero-config tool to make locally trusted development certificates with any names you'd like.

Adds an Ember tab to the browser's Developer Tools that allows you to inspect Ember objects in your application.

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

Use Pull Request description as Squashed and Merged commit messages.

A SurfingKeys configuration which adds 130+ key mappings for 20+ sites & OmniBar search suggestions for 50+ sites

Toggl Button extension for Chrome and Firefox

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

Legacy Browserpass repo, development is now happening at:

Use your browser's monospace font for message body text in Gmail

Add instant search capabilities to GitHub's search bar

Arrgh Some Patchy Goodness to GitHub!

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

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

Useragent analysis tool.浏览器分析判断工具 - 用户代理、操作系统信息

Sample code for developing an OpenTok screen-sharing extension for Google Chrome and Firefox

Various Automator and AppleScript workflow and scripts for simplifying life

Manage your passwords easily and securely, via browser extension for Firefox, Chrome, Opera

A WebExtension which improves Twitter & TweetDeck user experience for Persian users

The Freedom to Open URLs in Third-Party Browsers on iOS with Custom UIActivity Subclasses.

CatBlock - An ad-blocking extension (with an ability to replace ads by pictures) for all major desktop browsers!

Open Source Intelligence Browser Extension

Browser hacks to disable WebAssembly (WASM)

Redux for WebExtensions

WebExtension for saving media, links, or selections into user-defined directories

Typescript, React, Redux, Styled-Component and Webpack based sample extension boilerplate. Runs on Chrome and Firefox. Sample chrome extension.

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

DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome.

A keyboard interface to the web

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

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

KeePass 2.x plugin which imports credentials from various browsers.

UserScripts for Firefox, Chrome and etc