JavaScript Firefox

Open-source JavaScript projects categorized as Firefox

Top 23 JavaScript Firefox Projects

  • bypass-paywalls-chrome

    Bypass Paywalls web browser extension for Chrome and Firefox.

    Project mention: Bypass Paywalls Clean combines all soft paywall hacks into one neat package | | 2023-11-21
  • uBlock

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

    Project mention: Why Bother with uBlock Being Blocked in Chrome? Time to Switch to Firefox | | 2023-11-27

    I'm misremembering from the initial "uBO Minus" release [1]


  • Appwrite

    Appwrite - The open-source backend cloud platform. Add Auth, Databases, Functions, and Storage to your product and build any application at any scale while using your preferred coding languages and tools.

  • octotree

    GitHub on steroids

    Project mention: How to read code on github? | /r/learnprogramming | 2023-03-30
  • SingleFile

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

    Project mention: My website is one binary | | 2023-10-21

    I agree it would be "great" a complete website in the ZIP. I think this is technically possible, someone just have to code it.


  • metamask-extension

    :globe_with_meridians: :electric_plug: The MetaMask browser extension enables browsing Ethereum blockchain enabled websites

    Project mention: Fe or Solidity, which is better? | | 2023-11-29

    For this tutorial you will need Metamask or other wallet of your choice, with Scroll Sepolia funds that you can get from a Sepolia faucet and then bridge them to L2 using the Scroll Sepolia bridge. Alternatively, you can use a Scroll Sepolia Faucet to get funds directly on L2.

  • user.js

    Firefox privacy, security and anti-tracking: a comprehensive user.js template for configuration and hardening

    Project mention: Anonimlik Rehberi | /r/KGBTR | 2023-10-23
  • omni

    The all-in-one tool to supercharge your productivity ⌨️

    Project mention: What chrome extensions are you using in 2023? | /r/chrome_extensions | 2023-01-10 - for self-organization and optional browsing through your bookmarks in a familiar way (if you like Cmd+K spotlight search bar a common pattern in many modern applications, this is for you!)

  • InfluxDB

    Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.

  • melonJS

    a fresh, modern & lightweight HTML5 game engine

    Project mention: Babylon 6.0 | | 2023-04-20
  • Surfingkeys

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

    Project mention: Surfingkeys: Supercharged Vimium with JavaScript Support | | 2023-12-01
  • floccus

    :cloud: Sync your bookmarks privately across browsers and devices

    Project mention: Floccus – Sync Bookmarks Privately | | 2023-11-26
  • notion-enhancer

    an enhancer/customiser for the all-in-one productivity workspace

    Project mention: Notion Tools: A Collection of Useful Resources for Notion Users | /r/u_ahmetdvci | 2023-07-08

    You can download Notion Enhancer from here.

  • ClearURLs-Addon

    ClearURLs is an add-on based on the new WebExtensions technology and will automatically remove tracking elements from URLs to help protect your privacy.

    Project mention: Implement URL cleaner | /r/signal | 2023-06-10

    Ever heard of the ClearURLs Browser-Addon. It's also available for Firefox for Android.

  • Traduzir-paginas-web

    Translate your page in real time using Google or Yandex

    Project mention: It's never been a better time to switch to Firefox | | 2023-11-22
  • treestyletab

    Tree Style Tab, Show tabs like a tree.

    Project mention: Why Bother with uBlock Being Blocked in Chrome? Time to Switch to Firefox | | 2023-11-27

    Addressing grandparent's comment regarding lack of tab grouping, I made a custom stylesheet for TST that somewhat tries to tackle this:

  • slimerjs

    A scriptable browser like PhantomJS, based on Firefox

  • I-Still-Dont-Care-About-Cookies

    Debloated fork of the extension "I don't care about cookies"

    Project mention: German court declares Do Not Track to be legally binding | | 2023-10-31 does reject non-technical cookies – as much as it can – but will do the rest.

  • user.js

    user.js -- Firefox configuration hardening (by pyllyukko)

    Project mention: MULLVAD VPN AND THE TOR PROJECT TEAM UP TO RELEASE THE MULLVAD BROWSER. - Blog | Mullvad VPN | /r/mullvadvpn | 2023-04-03
  • AdguardBrowserExtension

    AdGuard browser extension

    Project mention: What tools do you use to wage war with porn? | /r/NoFapChristians | 2023-10-30

    AdGuard DNS - I found the filtering ability of Covenant Eyes somewhat underwhelming, so instead I use AdGuard DNS. In case you don't know, DNS (Domain Name Server) filtering is incredibly useful for blocking porn. Furthermore, if you pay for AdGuard VPN, you get AdGuard DNS thrown in for free (so you get privacy AND web filtering). AdGuard has other products as well that can be used in conjunction with the VPN and DNS servers. (

  • Betterfox

    Firefox speed, privacy, and security: a user.js template for configuration. Your favorite browser, but better.

    Project mention: Need advice: What browser would you recommend for someone who wants to sync between Linux, Mac and iOS | /r/browsers | 2023-11-12

    I use Brave/Firefox, so I might be biased, but I think they are the best options. If you want things to be lightweight, you could just remove some of the fat from Firefox using something like Betterfox.

  • multi-account-containers

    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.

    Project mention: Ask HN: Why does Firefox have such a low market share anyways? | | 2023-07-17

    the opposite is true, too, since "Clear History" in Chrome Profiles behaves correctly and (AFAIK) is scoped just to that Profile unlike our container friend:

    I still use them because combined with ( ) is a game changer for my workflow but it does make me sad that issue has been open for so long

  • privacy-redirect

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

    Project mention: AI Generated Propaganda | | 2023-05-02

    There is an open-source browser extension called Privacy Redirect which will turn all Twitter links you click into Nitter links [0].

    This also turns Reddit links into Libreddit/Teddit links, YouTube links into Invidious links, etc.

    Basically you get to browse an Internet without intrusive pre-roll ads or outrage algorithms. I think based on your comment that this might be of interest to you.


  • Librefox

    Librefox: Firefox with privacy enhancements

    Project mention: Firefox has surpassed Chrome on Speedometer | | 2023-07-18
  • SingleFileZ

    Web Extension to save a faithful copy of an entire web page in a self-extracting ZIP file

    Project mention: Password protect a static HTML page | | 2023-02-18

    You can do the same thing with SingleFileZ [1] which can protect saved pages with a password. It relies on the zip specification to store encrypted resources.


  • Onboard AI

    Learn any GitHub repo in 59 seconds. Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at

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 2023-12-01.

JavaScript Firefox related posts


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

Project Stars
1 bypass-paywalls-chrome 43,557
2 uBlock 40,253
3 octotree 22,566
4 SingleFile 12,490
5 metamask-extension 10,893
6 user.js 8,418
7 omni 6,679
8 melonJS 5,573
9 Surfingkeys 4,863
10 floccus 4,516
11 notion-enhancer 4,461
12 ClearURLs-Addon 3,773
13 Traduzir-paginas-web 3,306
14 treestyletab 3,174
15 slimerjs 2,991
16 I-Still-Dont-Care-About-Cookies 2,789
17 user.js 2,650
18 AdguardBrowserExtension 2,559
19 Betterfox 2,511
20 multi-account-containers 2,500
21 privacy-redirect 1,817
22 Librefox 1,692
23 SingleFileZ 1,685
Learn any GitHub repo in 59 seconds
Onboard AI learns any GitHub repo in minutes and lets you chat with it to locate functionality, understand different parts, and generate new code. Use it for free at