JavaScript Extension

Open-source JavaScript projects categorized as Extension

Top 23 JavaScript Extension Projects

  • redux-devtools-extension

    Redux DevTools extension.

    Project mention: WHAT THE REDUX | | 2021-12-22

    As alternative to redux devtools extension in our store. I posted a link to ComposewithDevTools. Which can be use in place of the redux devtools line in our store. Check section 1.3 for more details. ComposeWithDevTools

  • metamask-extension

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

  • Sonar

    Write Clean JavaScript Code. Always.. Sonar helps you commit clean code every time. With over 300 unique rules to find JavaScript bugs, code smells & vulnerabilities, Sonar finds the issues while you focus on the work.

  • ProjectVisBug

    FireBug for designers › Edit any webpage, in any state

  • Surfingkeys

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

    Project mention: My RSI recovery setup | | 2022-09-24

    I can highly recommend this extension. It looks similar to the one you use.

  • isometric-contributions

    Browser extension for rendering an isometric pixel art version of your GitHub contribution graph.

    Project mention: Add Your Git Commits to Your Website | | 2022-05-04

    Thanks to people such as Jason Long and people on StackOverflow, there are countless of answers! Jason uses obelisk.js, which is a a JavaScript library for building isometric pixel objects. You can create bricks, cube, pyramids, etc. within the HTML5 canvas.

  • ImprovedTube-for-YouTube

    YouTube Extension [80+Lean🧰Features]📌[Longest-standing©️2012]📌[485 000+Users👨‍👩‍👧‍👧][Guide/Wiki:missing!] - ⚙️⋮[🎞️☕🎛️🎧🔊⏯️🎬🎨📈🧩🧪][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][Playlist Reverse]YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube YouTube Yo

    Project mention: Video thumbnails are now blank on Firefox | | 2022-11-09

    Improved Tube extension was the culprit. No idea why it only happened for one of my accounts though.

  • marinara

    Pomodoro® time management assistant for Chrome

    Project mention: Subscription-free Windows pomodoro mini timer? | | 2022-04-27

    If you are always working in browser there is this chrome addon:

  • Scout APM

    Truly a developer’s best friend. Scout APM is great for developers who want to find and fix performance issues in their applications. With Scout, we'll take care of the bugs so you can focus on building great things 🚀.

  • FastForward

    Don't waste your time with compliance. FastForward automatically skips annoying link shorteners.

    Project mention: Bypass needed for Comet, or literally any executor. | | 2022-11-30 Works for EVERY executor

  • chrome-extension-cli

    🚀 The CLI for your next Chrome Extension

    Project mention: The CLI for your next Chrome Extension | | 2022-05-30
  • wasavi

    wasavi is an extension for Chrome, Firefox, and Opera. wasavi changes a textarea element to virtual vi editor which supports almost all the vi/ex commands.

    Project mention: Show HN: Using Vim as an input method editor (IME) for X11 apps | | 2022-12-03

    On OSX w/ Chrome I use wasavi[0], a javascript extension that implements a nice subset of vim directly in the editor.


  • nightTab

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

    Project mention: Is NightTab safe? | | 2022-08-23

    It is open source and anyone can see the source code

  • snipsnap

    Speed up your development with a powerful set of tools

  • blur-my-shell

    Extension that adds a blur look to different parts of the GNOME Shell, including the top panel, dash and overview

    Project mention: A breath of fresh air... | | 2022-11-20
  • yomichan

    Japanese pop-up dictionary extension for Chrome and Firefox.

    Project mention: Best Japanese school for intermediate with gaps | | 2022-11-28
  • bunken

    A chrome extension to download ebooks directly from Goodreads.

    Project mention: can we get one that does this for books on sites like goodreads or amazon? | | 2022-01-17

    There are already several of these, try e.g.

  • Stay

    Stay is a local userscript manager and an extension sample for Safari on iOS/iPadOS.

    Project mention: Stay² – open-source iOS userscript manager | | 2021-12-31
  • sieve

    Sieve Script Editor (by thsmi)

    Project mention: Maybe moving to self hosted email | | 2022-05-08

    use mailsieve scripts, they are amazing. Checkout sieve originally just a thunderbird addon but you can install it as a desktop app, hosted web application or build your own docker container.

  • obsidian-clipper

    A Chrome extension that easily clips selections to Obsidian

    Project mention: Full featured web clipper | | 2022-03-07

    jplattel/obsidian-clipper: A Chrome extension that easily clips selections to Obsidian

  • scriptsafe

    a browser extension to bring security and privacy to chrome, firefox, and opera

    Project mention: I (college student) Keep Having to Order New Chase Debit Cards Because They Keep Getting Compromised. What do I do? | | 2022-11-25

    If there is a keylogger or virus on your laptop then your #1 priority should be to get rid of it. From the information you've given here, it's impossible to tell what it is or how hard it might be to remove. Someone (trustworthy!) with physical access to the computer might have a better chance at figuring that out. But honestly, the best way to be sure is to reinstall the operating system from scratch. (Yes, you will lose any files that aren't backed up, but that's kind of the point, you have to get rid of everything associated with the keylogger.) Once that's done, you should see if you can prevent yourself from getting another one. Again, it's hard to know what you should actually be doing without knowing how the presumed keylogger got on your computer in the first place, but as a start it might help to install some browser extensions which can help websites from running sketchy code - I personally use uBlock Origin and Script Safe (or NoScript is a fine alternative to the latter), and Ghostery is another one a lot of people like.

  • slashy

    Supercharge Notion with custom commands to record, draw, and more ✍️

    Project mention: Hey everyone it's my first ipad i will mainly use it for school notes. what are the best apps and the ones with a full version is anyone worth it? | | 2022-10-24

    I'm not too sure but I found this:

  • adobe-discord-rpc

    Discord Rich Presence extension for your adobe apps!


    A High-Fidelity Web Archiving Extension for Chrome and Chromium based browsers!

    Project mention: r18 database of metadata | | 2022-09-30
  • WebXR-emulator-extension

    WebXR emulator extension

    Project mention: How to develop WebVR without using a helmet? | | 2022-09-17
  • Zigi

    Close all those tabs. Zigi will handle your updates.. Zigi monitors Jira and GitHub updates, pings you when PRs need approval and lets you take fast actions - all directly from Slack! Plus it reduces cycle time by up to 75%.

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 2022-12-03.

JavaScript Extension related posts


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

Project Stars
1 redux-devtools-extension 13,458
2 metamask-extension 9,069
3 ProjectVisBug 5,016
4 Surfingkeys 4,331
5 isometric-contributions 3,258
6 ImprovedTube-for-YouTube 2,286
7 marinara 2,052
8 FastForward 1,901
9 chrome-extension-cli 1,585
10 wasavi 1,352
11 nightTab 1,274
12 snipsnap 1,043
13 blur-my-shell 843
14 yomichan 771
15 bunken 733
16 Stay 673
17 sieve 603
18 obsidian-clipper 479
19 scriptsafe 473
20 slashy 411
21 adobe-discord-rpc 376
22 374
23 WebXR-emulator-extension 362
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