MOSS/Foundational Technology/Projects We Use

This is an incomplete list of the free software and open source projects Mozilla relies upon. As a starting point, it lists each project along with a short statement of how we depend on it. Where practical it would also be helpful to identify a Mozillian most closely associated with our use of each project.

Note that presence on this list isn't the same as applying for MOSS - projects have to make an application using the process on the main page.

This is a work in progress - please contribute to this list.

Project	Description	Contact within Mozilla
angular.js	Used by A-Team for web apps (eg Treeherder)	Member of Jonathan Griffin's team
Apache Server	Used by A-Team for web apps	Member of Jonathan Griffin's team
Ansible	Used by IT (netops) and A-Team to manage deployments	jbarnell , GPS?
BabelJS	JavaScript compiler, Used by Gaia, TaskCluster team	Selena Deckelmann
Blessings	Terminal formatting lib used by mozilla-central build process	Erik Rose
Bootstrap	HTML/CSS/JS framework, used by many of Mozilla's sites.	Webdev
brew / Homebrew	Mac OS X packaging system, used to install dev tools	Sam Penrose
bro	The Bro Network Security Monitor	Michal Purzynski
BuildBot	The base system currently in use for release	Dustin J. Mitchell
Bugzilla (upstream)	The base Bugzilla on that we customize for Mozilla's use	Glob
Celery	Distributed task queue. Used by Treeherder and others.	Member of Jonathan Griffin's team
CKEditor	WYSIWYG editor on MDN
Chai	JavaScript test and assertion library	Cloud Services, Tarek Ziade's team (kinto.js), Firefox Hello team
Clang/LLVM	C/C++ compiler and infrastructure	Ehsan Akhgari
CodeMirror	Used in DevTools, Thimble, and other online code tools	David Humphrey/Simon Wex
Cookiecutter	Templating system used to clone our Sugardough Django template	Giorgos Logiotatidis
ConEmu	Console emulator for Windows. Used by devs running Windows.	Ed Morley
curl	internet transfer tool and library, used by crashreporter and FirefoxOS	Daniel Stenberg
Debian	Used on many developer boxes	Unknown (maybe Sylvestre Ledru) or glandium
Deis	Open Source Heroku-like PaaS platform. Hosts www.mozilla.org, masterfirefoxos.mozilla.org, etc.	Member of Benjamin Sternthal's team
Disconnect.me	Open, transparent, neutral Tracking Protection blocklist used in Firefox Private Browsing Windows	Marshall Erwin, Javaun Moradi, Francois Marier
Discourse	Community, Webmaker, Advocacy, et al	Community Ops (Yousef Alam or Tanner Filip)
Django	Backend web framework used on many of our websites, including addons.mozilla.org, marketplace.mozilla.org, support.mozilla.org, Input, Snippets, MDN (Mozilla Developer Network), mozilla.org, Treeherder	Andy McKay and Jannis Leidel are (or have been) on the Django Software Foundation board, Jannis is core team member
Django REST framework	API framework. Used by various Mozilla sites including MDN, Firefox marketplace, mozilla.org, support.mozilla.com.	Andy McKay and Jannis Leidel
Docker	Used by release engineering for Linux build and test containers and by ateam for managing test and production services. Used by many Mozilla websites as well such as addons.mozilla.org, marketplace.mozilla.org. (Plus docker-compose and docker machine)	Member of Selena Deckelmann's team
elasticsearch	Search engine for various web sites and analytics	Erik Rose
emacs	Programmable editor used by many developers	—
eslint	Pluggable linting utiltity used by Firefox Hello, DevTools and Firefox Android	Mark Banner
Etherpad	Used for meeting notes, etc	JP Schneider
flake8	Wrapper around Python linters. Used by Treeherder and others.	Member of Jonathan Griffin's team
Flask	Python web framework	Erik Rose
Font Awesome	Font and CSS toolkit, used by many of Mozilla's sites.	Webdev
GCC	C/C++ compiler and infrastructure	Nathan Froyd
Git	Version control system - https://git.mozilla.org	Unknown
gunicorn	Python WSGI HTTP Server. Used by Treeherder, Socorro, Pontoon.	Webdev
HarfBuzz	International text shaping engine used in Firefox/Servo	Platform team
Hunspell	Spellchecking engine	Ehsan Akhgari
Hyphen	Hyphenation library	Jonathan Kew
HTTPie	HTTP command-line client	Cloud Services (among many others), Tarek Ziade's team
Intern	Intern is a complete test system for JavaScript designed to help you write and run consistent, high-quality test cases for your JavaScript libraries and applications.	jrgm/vladikoff
jemalloc	Memory allocation library	We can ask glandium
Jenkins CI	Continuous integration system used by WebQA and EE	Unknown
jQuery	JavaScript library, used by many of Mozilla's sites.	Webdev
jsdom	DOM implementation in full JS	Test suites in Cloud Services, Tarek Ziade's team (kinto.js)
Kombu	Messaging library for Python. Used by Treeherder and others.	Member of Jonathan Griffin's team
libjpeg-turbo	JPEG decoding library	Jeff Muizelaar
libpng	PNG decoding library	Jeff Muizelaar
libvpx (Google)	Library for support of Google’s VP* family of codecs	Tim Terriberry
Linux	OS kernel used in Firefox OS	Unknown
lodash	JavaScript utility library, used by many of Mozilla's sites.	Webdev & Firefox Hello
Mailman	Mailing lists	Unknown
MediaWiki	You are reading this on a wiki	Sheeri Cabral
Mercurial	Version control system and source code management	GPS
Mocha	JavaScript test runner	Cloud Services, Tarek Ziade's team (kinto.js); Firefox Hello team
Mohawk	Python library for Hawk HTTP authorization. Used by Treeherder and others.	Member of Jonathan Griffin's team
mozdef	Security event monitoring and incident response	Jeff Bryner
msys	Used to build Firefox on Windows. Note: It's likely best we support the newer MSYS2 project instead: https://github.com/msys2	Unknown
MySQL	Open source relational DB used by many developers, including AMO, SUMO, Input, bugzilla, releng, adminstered by IT	Sheeri Cabral
Nagios	IT management system. Used for notifications of system failures	Sheeri Cabral, Ashish V.
netsniff-ng	Linux networking toolkit	Michal Purzynski
nICEr	Library for traversing firewalls	Unknown
NixOS	Reproducible Linux distribution. Used by some developers and for running benchmarks on Firefox OS for AreWeFastYet	Nicolas B. Pierron
Node.js	JavaScript runtime for server side applications, command line utilities	Nick Desaulniers
nrappkit	Toolkit for building standalone applications	Unknown
OpenH264 (Cisco)	H.264 video library	Unknown
OpenResty	a fast web app server by extending nginx, used by cloudops	Benson Wong (mostlygeek)
OpenSSH	Remote server management, secure transport for Git and Mercurial	Unknown
OpenLDAP	User management used by Infra	:jabba?
inspircd	Irc server used by mozilla	Unknown
OpenSSL	Cryptograpahy and TLS Toolkit	Nick Desaulniers
OTS	OpenType sanitizer used by Firefox to protect against security bugs in underlying platforms related to malicious fonts	Jonathan Kew
OWASP ZAP	Web security testing tool used by security and QA teams	Simon Bennetts (psiinon)
Owncloud	Open platform to host your cloud under your control	Some communities have been using it to host files under their control (ask Nukeador)
Parsimonious	Parsing lib used by DXR and a few other sites (I think)	Erik Rose
PDF.js	Used as the PDF Viewer in Firefox and Firefox OS	Brendan Dahl, Yury Delendik
pep8	Python linter. Used by Treeherder and others.	Member of Jonathan Griffin's team
Perl	Used by Bugzilla	Member of Jonathan Griffin's team
pip	Python package tool. Used by all Python projects.	Erik Rose and Jannis Leidel, Jannis is core team member (PyPA)
Piwik	Analytic software that gives you the control and respects privacy	Some communities have been using it to avoid GA analytics (Ask Nukeador)
Pocketsphinx	Speech recognition toolkit embedded into Firefox OS	André Natal
PostgreSQL	Open source relational DB used by many developers, adminstered by IT	Selena Deckelmann
Prism.js	Syntax highlighting on code samples on MDN
Puppet	System administration tool	Member of Amy Rich's team
pyflakes	Python linter. Used by Treeherder and others.	Member of Jonathan Griffin's team
PyPy	Python language runtime. Used by Web Push service.	Cloud Services, esp. Ben Bangert
Pyramid	Python Web framework	Cloud Services team
pytest	Python testing tool. Used by Treeherder and others.	Member of Jonathan Griffin's team
Python	Scripting language	Python Software Foundation, Selena Deckelmann is a former board member
pyelasticsearch	Python client for elasticsearch	Erik Rose
RabbitMQ	Distributed Queue, used by Socorro, Pulse (all our publicly available build/test/commit information flows through this), Treeherder, addons.mozilla.org (with Celery), marketplace.mozilla.org (with Celery)	Selena Deckelmann
ReactJS	Javascript library for building user interfaces. Used by Firefox Hello & DevTools	Mark Banner
Read the Docs	Hosted automatically-built documentation, used by Cloud Services and a wide variety of mozilla Github projects	Ben Bangert, Jannis Leidel, Gervase Markham
Redis	Really fast data structure store, cache and message broker	Cloud Services Tarek Ziade's team, Loop Server (Hello) team
Requests	"Python HTTP Requests for Humans". Used by many many Mozilla Python projects.	Member of Jonathan Griffin's team
Review Board	The base of MozReview, the new review tool being developed to replace Splinter	Steven MacLeod, Mike Conley
SCOWL	en-US word list used for spell checking.	ehsan
Selenium	Browser test driver	stephend/AutomatedTester or jrgm/vladikoff
Sinon	JavaScript mock library	Cloud Services, Tarek Ziade's team (kinto.js); Firefox Hello team
SlimerJS	Scriptable browser, based on Gecko, used for functional tests in some few Mozilla projects ( PluotSorbet, some FxOS apps ? and others ?)	Myk Melez
SQLite	File-based database	khuey
Stylus	CSS Pre-processor on several sites	webdev
Subversion	https://svn.mozilla.org (Planning to decommission in near future)	Unknown
suricata	IDS / IPS / NSM engine	Michal Purzynski
Travis	Continuous integration system used by several teams (eg Treeherder)	Jonathan Griffin's team
Vagrant	Build and distribute dev envs, used by Treeherder and others	Member of Jonathan Griffin's team
Valgrind	Memory error detection and profiling of C and C++ code	jseward, njn
vim	editor used by many developers	—
web-platform-tests	Testcases and tooling for cross-browser testing of web-platform APIs	jgraham
WebRTC.org	Components to support real-time communication in browsers and mobile applications	Randell Jesup
Werkzeug	Component for server-side Python applications, used to detect bottlenecks	Cloud Services Tarek Ziade's team
WordPress	Powers our blogs, blog.mozilla.org	Craig Cook
Xiph.Org	Media codecs ship in Firefox, encoding tools	Ralph Giles
zlib	Streaming compression and decompression for HTTP, PNG, etc.