mozilla

Mozilla Joined Sept 2009 View on GitHub

Stars
306,950
across 2,291 public repos
Rank
#38
of 94,827 organizations, top 0.04%

Repositories with 50+ stars

mozilla's repositories with their overall rank
RankRepositoryLanguageStars
469

PDF Reader in JavaScript

JavaScript 54,117
1,549

DeepSpeech is an open source embedded (offline, on-device) speech-to-text engine which can run in real time on devices ranging from a Raspberry Pi 4 to high power GPU servers.

C++ 26,774
4,057

Simple, private file sharing from the makers of Firefox

FreeMarker 13,237
4,804

A standalone version of the readability lib

JavaScript 11,534
5,624

Deep learning for Text to Speech (Discussion forum: https://discourse.mozilla.org/c/tts)

Jupyter Notebook 10,187
6,227

DEPRECATED - A HTML5/JavaScript multiplayer game experiment

JavaScript 9,367
6,530

A powerful templating engine with inheritance, asynchronous control, and more (jinja2 inspired)

JavaScript 9,004
7,614

Sccache is a ccache-like tool. It is used as a compiler wrapper and avoids compilation when possible. Sccache has the capability to utilize caching in remote storage environments, including...

Rust 7,890
8,147

WebDriver Classic proxy for automating Firefox through Marionette

7,476
11,072

Improved JPEG encoder.

C 5,746
12,570

DEPRECATED - Mozilla's new typeface, used in Firefox OS

CSS 5,130
12,612

a multi-language bindings generator for rust

Rust 5,114
14,045

Rhino is an open-source implementation of JavaScript written entirely in Java

JavaScript 4,642
17,912

Consume and generate source maps.

JavaScript 3,723
18,108

SUPERSEDED by https://github.com/mozilla-firefox/firefox. Read-only Git mirror of the Mercurial gecko repositories at https://hg.mozilla.org

JavaScript 3,687
18,227

Shumway is a Flash VM and runtime written in JavaScript

TypeScript 3,663
21,231

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...

JavaScript 3,168
21,340

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

JavaScript 3,153
22,017

A lightweight polyfill library for Promise-based WebExtension APIs in Chrome

JavaScript 3,066
22,810

A project for generating C bindings from Rust code

Rust 2,965
24,562

Bleach is an allowed-list-based HTML sanitizing library that escapes or strips markup and attributes

Python 2,763
28,606

Featureful configuration management library for Node.js

JavaScript 2,375
30,168

Neqo, the Mozilla Firefox implementation of QUIC in Rust

Rust 2,252
31,554

DEPRECATED - MozDef: Mozilla Enterprise Defense Platform

Python 2,156
31,993

The HTML5 Media Framework. (Unmaintained. See https://github.com/menismu/popcorn-js for activity)

JavaScript 2,127
34,173

A very simple way to find out which SSL ciphersuites are supported by a target.

Python 1,992
34,849

DEPRECATED - A framework for extracting meaning from web pages

JavaScript 1,956
35,259

INACTIVE - HTTP Holder-Of-Key Authentication Scheme. Archived as of April 5th, 2024

JavaScript 1,933
36,944

Mozilla HTTP Observatory

Python 1,848
37,154

Persona is a secure, distributed, and easy to use identification system.

JavaScript 1,839
37,515

Keep your email safe from hackers and trackers. Make an email alias with 1 click, and keep your address to yourself.

Python 1,821
40,731

Platform for Mozilla Support

Python 1,681
40,778

Mozilla's Localization Platform

Python 1,679
41,214

UNMAINTAINED A persistent, relational store inspired by Datomic and DataScript.

Rust 1,661
42,110

Beautiful concurrency for JavaScript

JavaScript 1,626
48,122

UPDATE: This project is no longer maintained. Please check out Glitch.com instead.

JavaScript 1,424
49,873

Rust tool to collect and aggregate code coverage data for multiple source files

Rust 1,371
50,920

Making mozilla.org awesome, one pebble at a time

HTML 1,342
51,608

Policy Templates for Firefox

Python 1,323
52,172

Generic build of PDF.js library.

JavaScript 1,308
53,029 Kotlin 1,285
56,384

Distributed & real time digital forensics at the speed of the cloud

Go 1,201
58,016

Our repository for Diversity, Equity and Inclusion work at Mozilla

1,164
59,748

Server Side TLS Tools have moved

HTML 1,127
62,332

Facebook Container isolates your Facebook activity from the rest of your web activity in order to prevent Facebook from tracking you outside of the Facebook website via third party cookies.

JavaScript 1,073
65,742

supply-chain security for Rust

Rust 1,010
69,442

Mozilla Monitor arms you with tools to keep your personal information safe. Find out what hackers already know about you and learn how to stay a step ahead of them.

Fluent 950
71,730

INACTIVE - http://mzl.la/ghe-archive - The Narcissus meta-circular JavaScript interpreter

JavaScript 917
72,667

🕶 addons.mozilla.org Django app and API 🎉

Python 905
76,034

Mozilla Open Badges Backpack

JavaScript 862
76,575

Examples of how to use or integrate DeepSpeech

Python 855
80,235

DEPRECATED - Powerful search for large codebases

Python 814
81,013

INACTIVE - http://mzl.la/ghe-archive - A featherweight PaaS on top of Amazon EC2 for deploying node apps

JavaScript 806
82,941

DEPRECATED - A prototype SSH configuration and policy scanner (Blog: https://mozilla.github.io/ssh_scan/)

Ruby 786
85,151 HTML 764
85,689

secure sessions stored in cookies

JavaScript 759
85,804

DEPRECATED - Build desktop applications with web technologies.

JavaScript 758
91,629

PROJECT DEPRECATED (WAS: "Mozilla's Web application base template. Half Django, half awesomeness, half not good at math.")

Python 706
92,939

Monorepo for Mozilla Accounts (formerly Firefox Accounts)

TypeScript 695
95,118

Firefox Application Services

Rust 677
98,992

Project Tofino is a browser interaction experiment.

HTML 648
100,495

DEPRECATED - The Add-on SDK repository.

638
102,410

Content Security Policy for Django.

Python 625
103,454

DEPRECATED - Android Stumbler for Mozilla

Java 618
108,765

Orignal unmaintained version of the Lightbeam extension. See lightbeam-we for the new one which works in modern versions of Firefox.

JavaScript 585
108,935

Mozilla Ichnaea

Python 584
109,973

Platform for Machine Learning projects on Software Engineering

Python 578
110,156

Mozilla overlay for Nixpkgs.

Nix 577
110,690

a experimental, Electron-compatible runtime on top of Gecko

574
111,602

DEPRECATED - Let's make a SQL parser so we can provide a familiar interface to non-sql datastores!

Python 569
111,956

Firefox Translations is a webextension that enables client side translations for web browsers.

JavaScript 567
112,144

Node.js on top of SpiderMonkey

JavaScript 566
113,222

A django OpenID Connect library

Python 560
113,786

Model Context Protocol server for Firefox DevTools - enables AI assistants to inspect and control Firefox browser through WebDriver BiDi

TypeScript 557
114,170

GeckoView is a set of components for embedding Gecko in Android apps

HTML 555
115,645

Front-end to complement mozilla/addons-server

JavaScript 547
116,620

An observatory for TLS configurations, X509 certificates, and more.

Go 542
122,604

A JavaScript implementation of the WebVTT specification

JavaScript 513
123,015

Theming demo for Firefox Quantum and beyond

JavaScript 511
125,452

DEPRECATED - A notepad for Firefox

HTML 500
125,628

Cross platform audio library

C++ 499
126,672

INACTIVE - http://mzl.la/ghe-archive - DEPRECATED: See https://neutrino.js.org for alternative

JavaScript 494
129,719

Mozilla Skywriter

JavaScript 481
131,670

Backend for the Firefox Marketplace

Python 473
132,665

CPU-optimized Neural Machine Translation models for Firefox Translations

Ruby 469
133,701

Modern cross-platform telemetry

Rust 465
133,701

Library to analyze and collect metrics on source code

Rust 465
134,693

Mozilla's Zilla Slab Type Family

Shell 461
138,156

Parser for ISO Base Media Format aka video/mp4 written in Rust.

Rust 448
140,034

Extension containing an experimental libdweb APIs

JavaScript 441
141,175

Archived Mozilla SSL Configuration Generator . The code now lives at https://github.com/tlsref/configurator

437
144,098

Agnostic Github client API -- An EDSL for connecting to REST servers

Python 427
144,412

INACTIVE - http://mzl.la/ghe-archive - INACTIVE - http://mzl.la/ghe-archive - Normalizes mouse/touch events into 'pointer' events.

JavaScript 426
150,089

Twemoji font in COLR/CPAL layered format

JavaScript 408
151,407

DEPRECATED - Mozilla Open Design aims to bring open source principles to Creative Design. Find us on Matrix: chat.mozilla.org/#/room/#opendesign:mozilla.org

404
153,748

DEPRECATED - Migrated to https://github.com/mozilla/fxa

JavaScript 397
154,755

CLI to a Gecko desktop app runtime

JavaScript 394
156,144

Firefox OS Simulator is a test environment for Firefox OS. Use it to test your apps in a Firefox OS-like environment that looks and feels like a mobile phone.

JavaScript 390
159,351

Deprecated - MIG Memory Forensic library

Go 381
162,034

The code, training pipeline, and models that power Firefox Translations

C++ 374

Among 94,827 organizations

250k–400k stars: 27 organizations, including mozilla

Stars along the bottom, and organizations in each band on a log scale

Where the stars are

Languages

  1. JavaScript 143.1k stars, 47% · 116 repos
  2. C++ 28k stars, 9% · 5 repos
  3. Python 28k stars, 9% · 65 repos
  4. Rust 26k stars, 8% · 22 repos
  5. FreeMarker 13.5k stars, 4% · 2 repos
  6. Jupyter Notebook 10.3k stars, 3% · 2 repos
  7. C 6.5k stars, 2% · 6 repos
  8. HTML 5.9k stars, 2% · 12 repos

and 16 more languages

When they were made

100 repos with 50+ stars, made between 2009 and 2025

Quick stats

Next rank
+227 stars to reach #37
Next milestone
+435,796 stars to reach the top 0.01%
Public repos
2,291, 296 with 50+ stars
Popular repos
46 over 1k stars, 5 over 10k stars
Top repo
pdf.js, #469 of all repos, 18% of stars
Smaller repos
11,823 stars from repos under 50

Stars counted Recounted daily Next count around