skip to navigation
switch language
Firefox
visit
mozilla.org
Desktop
Features
Security
Performance
Customization
Technology
Videos
Tour
Future Releases
Mobile
Download
Features
Customize
Sync
Develop
Get Involved
FAQ
Blog
Videos
Future Releases
Add-ons
Firefox Add-ons
Featured Add-ons
Extensions
Themes
Personas
Search Tools
Language Support
Collections
Mobile Add-ons
Developer Hub
Support
Firefox Support
Mobile Support
Thunderbird Support
About
About Firefox
Join Mozilla
Participate
Press Center
Brand Toolkit
Careers
Partnerships
Legal
Contact Us
Blog
Firefox
®
Nightly
These builds are for testing purposes only.
Desktop
Windows 32-bit (Express)
501KB | exe
Windows 32-bit (Standard)
39MB | exe
Windows 64-bit (Standard)
40MB | exe
Mac
93MB | dmg
Linux (Intel)
51MB | tar.bz2
Linux (Intel, 64-bit)
50MB | tar.bz2
Mobile
Android (ARMv7, 2.3 Gingerbread)
36MB | apk
Android (ARMv7, 3.0 Honeycomb and above)
39MB | apk
Android (x86)
42MB | apk
Desktop Boot2Gecko
Windows
54MB | zip
Mac
118MB | dmg
Linux (Intel)
97MB | tar.bz2
Linux (Intel, 64-bit)
56MB | tar.bz2
Firefox Nightly automatically sends feedback to Mozilla.
Learn more.
Getting Started
Submit your feedback
Submit crash reports
Find testing tasks
Run test cases in MozTrap
Report Firefox bugs in Bugzilla
Report Firefox for Android bugs
Mailing Lists
Nightly-Testers on Desktop
Nightly-Testers on Android
Useful Add-ons
Nightly Tester Tools
Add-on Compatibility Reporter
Mozmill Crowd
Other Resources
Last 48 hours of check-ins
Other Nightly Builds (FTP)
The Burning Edge blog
Firefox Builds forum
Release information
Firefox Flight Tracking