Browser Extensions & Add-ons

31 repos

Browser extensions and add-ons for Chrome, Firefox, and other browsers, built primarily with JavaScript and TypeScript. This cluster covers tools that extend browser functionality through content scripts, popup interfaces, and background workers—ranging from productivity utilities to text-to-speech and content transformation tools. Developers working in this space will find examples of cross-browser extension architecture, manifest configuration, and patterns for injecting functionality into web pages.

JavaScript · 18

TypeScript · 12

HTML · 1

chrome-extension ·111,199

firefox ·83,118

chrome ·66,471

firefox-extension ·61,761

firefox-addon ·56,460

browser-extension ·48,289

webextension ·37,546

safari ·36,199

youtube ·33,800

typescript ·27,575

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addfox/addfox

🧩 Accelerate your browser extension development. Built on Rsbuild — fast, simple, and free

TypeScript

120

73 commits

crimx/ext-saladict

🥗 All-in-one professional pop-up dictionary and page translator which supports multiple search…

TypeScript

13,319

3,496 commits

ken107/read-aloud

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

JavaScript

1,742

661 commits

MikkoParkkola/translate-browser-extension

Full-page browser translation that handles the dynamically-loaded pages Google Translate and…

TypeScript

872 commits

preziotte/not-for-you

A browser extension that removes the algorithm from every major social platform.

HTML

30 commits

amir1376/ab-download-manager-browser-integration

Browser Integration for AB Download Manager App

TypeScript

235

93 commits

webbrain-one/webbrain

Open-source AI browser agent for Chrome and Firefox (monorepo) 🧠

JavaScript

1,023

4,569 commits

dessant/buster

Captcha solver extension for humans, available for Chrome, Edge and Firefox

JavaScript

9,293

143 commits

MauroPello/stop-the-slop

🚫 Spot AI-generated YouTube scripts and content farms in real-time. Open-source browser extension…

JavaScript

23 commits

cloudflare/pp-browser-extension

Client for Privacy Pass protocol providing unlinkable cryptographic tokens

TypeScript

415

328 commits

plibither8/refined-hacker-news

✨ Hacker News, but refined — Interface tweaks and features to make the HN experience better

JavaScript

834

348 commits

ajayyy/SponsorBlock

Skip YouTube video sponsors (browser extension)

TypeScript

13,774

4,032 commits

Anarios/return-youtube-dislike

Chrome extension to return youtube dislikes

JavaScript

13,769

1,175 commits

Hogwai/forbidd-in

Ways of preventing LinkedIn from detecting and fingerprinting browser extensions on chromium…

JavaScript

14 commits

Glench/ExtPay

The JavaScript library for ExtensionPay.com — payments for your browser extensions, no server…

JavaScript

765

131 commits

heinevwinston-bot/PageLens

A read-only AI for your browser via claude, which helps improve your productivity.

JavaScript

8 commits

libredirect/browser_extension

A browser extension that redirects popular sites to alternative privacy friendly frontends

JavaScript

4,049

1,643 commits

xloqia03/Habab-Discord-Quest-Extension

⚡ Custom browser extension built with JavaScript to automate and streamline Discord quest…

JavaScript

2 commits

gildas-lormeau/singlefile

Web Extension for saving a faithful copy of a complete web page in a single HTML file

JavaScript

22,366

8,186 commits

tabwrangler/tabwrangler

A browser extension that automatically closes your unused tabs so you can focus on the tabs that…

TypeScript

642

1,148 commits

onyourmark/chat-threads

Reshape long ChatGPT and Claude conversations: remove unwanted turns, isolate topics, and continue…

TypeScript

47 commits

bhollis/jsonview

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

TypeScript

1,719

290 commits

sofumel/TwitchTrendFlow

他チャンネルのチャットを Twitch公式のチャット欄に統合する Chrome拡張です。 A Chrome extension that merges chat from other…

JavaScript

1 commits

insin/control-panel-for-twitter

Browser extension which gives you more control over your Twitter timeline and adds missing features…

JavaScript

2,620

1,147 commits

dailydotdev/daily

daily.dev is the personalized developer news feed and community. Get the best tech content from all…

JavaScript

20,063

148 commits

apollographql/apollo-client-devtools

Apollo Client browser developer tools.

TypeScript

1,528

1,630 commits

magicelk235/Viaduct-CLI

A command-line tool that converts a Google Chrome extension into a Safari Web Extension

JavaScript

272 commits

bitwarden/clients

Bitwarden client apps (web, browser extension, desktop, and cli).

TypeScript

13,765

22,540 commits

yomidevs/yomitan

Pop-up dictionary browser extension for language learning. Successor to Yomichan.

JavaScript

2,821

5,251 commits

SimonBrazell/privacy-redirect

A simple web extension that redirects Twitter, YouTube, Instagram & Google Maps requests to privacy…

JavaScript

2,191

261 commits

birchill/10ten-ja-reader

A browser extension to translate Japanese by hovering over words.

TypeScript

758

5,232 commits