JavaScript Mozilla

Open-source JavaScript projects categorized as Mozilla

Top 14 JavaScript Mozilla Projects

  • user.js

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

    Project mention: In 2024, please switch to Firefox | | 2023-12-29

    For extensions, I recommend people follow the recommendations[1] in the arkenfox repo and either harden their firefox or use librewolf. Umatrix is unmaintained since 2019.


  • Betterfox

    Firefox user.js for speed, privacy, and security. Your favorite browser, but better.

    Project mention: Mozilla Firefox or Chrome which is best for MOBILE PHONE.? | /r/browsers | 2023-12-11

    You can apply Betterfox using USB debugging, but it takes time to set it up:

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  • 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
  • Librefox

    Librefox: Firefox with privacy enhancements

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

    Front-end to complement mozilla/addons-server

    Project mention: take your daily medicine guys | /r/linuxmemes | 2023-03-02

    They've admitted to it in their github. It even happens when you've changed the default search engine, and set the new tab to about:blank.

  • ca-archive

    Catalog of classic Firefox add-ons created before WebExtensions apocalypse

    Project mention: Ask HN: How can we help Firefox not to dissapear? | | 2023-10-31


    A lot of people care a lot. 15,000 developers falsifies your ludicrous "no one in the world cares about.

    Like many others, you are mixing up "I don't care" with "nobody cares", and you are wrong.

  • contain-google

    [Looking for maintainer] - Google Container isolates your Google activity from the rest of your web activity in order to prevent Google from tracking you outside of the Google website via third party cookies.

    Project mention: Using extra Firefox profiles to make my life better | | 2023-10-19

    The only time I have had friction with profiles, is with some Google SSO as I use an unofficial extension called Google Container and sometimes the redirect just doesn't work.

  • Onboard AI

    ChatGPT with full context of any GitHub repo. 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

  • paxmod

    🕊️ Firefox add-on for multi-row tabs and site-dependent tab colors

    Project mention: all tabs in one window visually | /r/firefox | 2023-04-18

    No native support for multiple tab rows in stable ... but you can take a look at this:

  • lightbeam-we

    Web Extension version of the Firefox Lightbeam add-on

  • removedupes

    Remove Duplicate Messages

  • firefox-performance-dashboards

    Firefox's performance dashboard

    Project mention: Chrome's next weapon in the War on Ad Blockers: Slower extension updates | | 2023-12-01

    > Show me these pages that Firefox doesn't render well.

    I'm not doing homework for you. Lots of pages don't render well in Firefox, it's a well known issue which is why it comes up in every thread about Firefox.

    > Show me pages that tank Firefox performance.

    Firefox in general performs poorly. Again, known long-term ongoing issue. Look at this thread where almost every top-level comment is sceptical that Firefox is even close to Chrome in performance:

    You can find ongoing performance benchmarks between Chrome and Firefox here, and it's not flattering for FF:

    > How many of them will have -webkit-* and other engine-exclusive markup/CSS?

    I don't care, at all. It's not my job, as a user, to debug performance problems.

    > Firefox updates every 6 weeks, just like Chrome.

    Ok? I didn't say anything about update cadence.

  • fx-private-relay-add-on

    Companion add-on for Firefox Relay. Keep your email safe from hackers and trackers. Make an email alias with one click, and keep your address to yourself.

    Project mention: Is there a way to default firefox mask to block promotional emails? | /r/firefox | 2023-05-30

    If there's no option for that in your settings, you can open this page and click on New issue to request this feature directly to the people involved with Firefox Relay.

  • user.js

    Removes Mozilla spyware from Firefox and makes Firefox more secure (by hnhx)

    Project mention: Stupid proprietary software doesn't support my obscure wants | /r/linuxmasterrace | 2023-04-25

    I use Librewolf (Flatpak) with uMatrix, and this user.js, which blocks a ton of requests that librewolf/arkenfox doesn't.

  • marker

    Highlight the Web (by robin-rpr)

  • WorkOS

    The modern API for authentication & user identity. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.

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 2023-12-29.

JavaScript Mozilla related posts


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

Project Stars
1 user.js 8,852
2 Betterfox 3,191
3 user.js 2,693
4 Librefox 1,688
5 addons-frontend 530
6 ca-archive 476
7 contain-google 409
8 paxmod 215
9 lightbeam-we 177
10 removedupes 76
11 firefox-performance-dashboards 66
12 fx-private-relay-add-on 64
13 user.js 42
14 marker 20
The modern API for authentication & user identity.
The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.