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Top MOZILLA GitHub Repositories & Tools (2026)

Discover the most starred and trending open source tools tagged with #mozilla.

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5 matching projects · updated Sep 28, 2026 How we rank ↗

#1 TRENDING thunderbird/thunderbird-android Kotlin 2011

Thunderbird for Android – Open Source Email App for Android (fka K-9 Mail)

◇ android ◇ communication ◇ email ◇ mozilla

2.8K ↑ +1 today

#2 TRENDING Floorp-Projects/Floorp TypeScript 2021

All of source code of Floorp 12, the most Advanced and Fastest Firefox derivative 🦊

◇ browser ◇ firefox ◇ gecko ◇ mozilla

270 ↑ +1 today

#3 TRENDING mozilla-mobile/reference-browser Kotlin 2018

A full-featured browser reference implementation using Mozilla Android Components.

◇ android ◇ app ◇ browser ◇ components

196 ↑ +1 today

#4 TRENDING mozilla/addons-frontend JavaScript 2016

Front-end to complement mozilla/addons-server

◇ addons ◇ amo ◇ mozilla ◇ react

410 ↑ +1 today

#5 TRENDING mozilla-mobile/firefox-ios Swift 2014

Firefox for iOS

◇ browser ◇ firefox ◇ ios-app ◇ mozilla

3.3K ↑ +1 today

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