JavaScript browser-extension

Open-source JavaScript projects categorized as browser-extension

Top 23 JavaScript browser-extension Projects

  • uBlock

    uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

    Project mention: Hey, is this the right uBlock Origin? Is it still open-source? | | 2023-05-30

    Yes, the source is here:

  • Quasar Framework

    Quasar Framework - Build high-performance VueJS user interfaces in record time

    Project mention: What tools do you use to convert Vue.js SPA to mobile apps? | | 2023-05-22

    Check out :)

  • Appwrite

    Appwrite - The Open Source Firebase alternative introduces iOS support . Appwrite is an open source backend server that helps you build native iOS applications much faster with realtime APIs for authentication, databases, files storage, cloud functions and much more!

  • octotree

    GitHub on steroids

    Project mention: How to read code on github? | | 2023-03-30
  • wappalyzer

    Identify technology on websites.

    Project mention: My proud first long term sidehustle project | | 2023-05-14

    Ooh and there is a cool Chrome extension called Wappalyzer. It detects which technologies, programming languages, frameworks and plugins are used of a certain website you are currently in.

  • chatGPTBox

    Integrating ChatGPT into your browser deeply, everything you need is here

    Project mention: *SAFE* chrome extensions? | | 2023-05-16
  • buster

    Captcha solver extension for humans

    Project mention: How to bypass Captchas, especially Cloudflare ones? | | 2023-05-25

    I was thinking something like Buster, an extension to "bypass" ReCaptchas.

  • undiscord

    Undiscord - Delete all messages in a Discord server / channel or DM (Easy and fast) Bulk delete

    Project mention: Folks, beware! Discord is collecting and hoarding a scary amount of data! | | 2023-05-07

    I want to suggest to people that they periodically choose to mass delete their own messages from DMs and servers using this browser-based extension:


    ONLYOFFICE Docs — document collaboration in your environment. Powerful document editing and collaboration in your app or environment. Ultimate security, API and 30+ ready connectors, SaaS or on-premises

  • RSSHub-Radar

    🍰 Browser extension that simplifies finding and subscribing RSS and RSSHub

    Project mention: RSS Feeds for AP News through Google News? | | 2022-12-21

    Thanks to DIYgod/RSSHub-Radar I found RSSHub's feed for AP News:

  • AdNauseam

    AdNauseam: Fight back against advertising surveillance

    Project mention: uBlock Origin/Ad Nauseam and YouTube | | 2023-02-22

    Please use this page to report issues or ask questions about Ad Nauseam. This specific issue has already been addressed:

  • GhostText

    👻 Use your text editor to write in your browser. Everything you type in the editor will be instantly updated in the browser (and vice versa).

    Project mention: Wasavi – VI editor for any webpage | | 2023-01-15

    > Come to think about it, I don't think it works as an "editor" in HTML text fields?

    There was "itsalltext"[1] (sadly defunct) - but there's an alternative (i just discovered - so I've yet to try it) : ghosttext


  • awesome-browser-extensions-for-github

    A collection of awesome browser extensions for GitHub.

  • web-ext

    A command line tool to help build, run, and test web extensions

    Project mention: Mozilla solves the Manifest V3 puzzle to save ad blockers from Chromapocalypse | | 2023-02-18

    > I hope FF gets service workers going soon

    As of October 2022, that’s “not planned”:

  • marinara

    Pomodoro® time management assistant for Chrome

  • github-hovercard

    Neat hovercards for GitHub.

  • better-onetab

    :bookmark_tabs: A better OneTab for Chrome :memo: Temporarily removed from firefox :construction: V2 is WIP

    Project mention: Serendipity | | 2022-05-31

    It’s so much better with better-onetab, where it even has a search bar to easily search for old tabs based on URL and page header. Highly recommend them both, and better-onetab is even open source if that matters to you!

  • search-by-image

    Browser extension for reverse image search, available for Chrome, Edge and Safari

    Project mention: Google Reverse Image search is basically useless since it is Lens. Like seriously, it's hot garbage, you just find *nothing*. Are there good alternatives? So far I tested tineye, which is just ok. | | 2023-05-18

    Specifically for finding the source of an image, I like to use Search by Image if you want an extension, or ImgOps if you want a website.

  • nightTab

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

    Project mention: Is there anyway to make the NightTab editor transparent? | | 2023-03-02

    Sorry, that is not possible at the moment. It's something I've thought about adding but the project is not in active development at the moment.

  • keepassxc-browser

    KeePassXC Browser Extension

    Project mention: Browers extensions | | 2023-05-28

    The aforementioned uBlock Origin in all of them. Furthermore I have Dark Reader, KeePassXC-Browser, Redirector and (since very recently, but might be temporary) SponsorBlock in the browsers in which it makes sense.

  • challenge-bypass-extension

    Client for Privacy Pass protocol providing unlinkable cryptographic tokens

    Project mention: Tell HN: Cloudflare verification is breaking the internet | | 2023-04-28

    Use Privacy Pass then if you don't want to use Chrome.

  • duckduckgo-privacy-extension

    DuckDuckGo Privacy Essentials browser extension for Firefox, Chrome.

    Project mention: ⟳ 3 apps added, 54 updated at | | 2023-05-28

    DuckDuckGo Privacy Browser (version 5.158.2): Privacy, simplified

  • read-aloud

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

    Project mention: What is the most human-souding TTS option in Archlinux, available through arch repos and AUR? | | 2023-01-23

    I've already used this in the past, and it's been good: Good luck!

  • web-archives

    Browser extension for viewing archived and cached versions of web pages, available for Chrome, Edge and Safari

    Project mention: LPT: Most browsers can use an open-source extension called "Web Archives" which will check the IA,, Google cache, etc. for any site, often bypassing paywalls. | | 2023-05-02
  • CodiumAI

    TestGPT | Generating meaningful tests for busy devs. Get non-trivial tests (and trivial, too!) suggested right inside your IDE, so you can code smart, create more value, and stay confident when you push.

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2023-05-30.

JavaScript browser-extension related posts


What are some of the best open-source browser-extension projects in JavaScript? This list will help you:

Project Stars
1 uBlock 35,986
2 Quasar Framework 23,582
3 octotree 22,456
4 wappalyzer 8,188
5 chatGPTBox 7,789
6 buster 5,950
7 undiscord 4,034
8 RSSHub-Radar 3,971
9 AdNauseam 3,615
10 GhostText 2,989
11 awesome-browser-extensions-for-github 2,694
12 web-ext 2,319
13 marinara 2,151
14 Consent-O-Matic 1,826
15 github-hovercard 1,763
16 better-onetab 1,546
17 search-by-image 1,442
18 nightTab 1,419
19 keepassxc-browser 1,384
20 challenge-bypass-extension 1,167
21 duckduckgo-privacy-extension 1,078
22 read-aloud 1,067
23 web-archives 808
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