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About Firefox Nightly for Developers 1.0.1920
Welcome to a sneak peek of our new mobile browser.
We know a little something about making game-changing web browsers. That’s why we’re excited to give you early access to Firefox Preview, a sneak peek of our new mobile browser. Built on GeckoView, this is our fastest Android browser yet. We’ve turned up the volume on everything you expect from Firefox: ease of use, safety, choice, control and privacy.
Download Firefox Nightly for Developers 1.0.1920
This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.
Version:161.0a1
Uploaded:October 25, 2026 at 1:22AM UTC
File size:68.34 MB
Downloads:192
Version:160.0a1
Uploaded:October 23, 2026 at 2:27AM UTC
File size:47.72 MB
Downloads:679
Version:159.0a1
Uploaded:October 9, 2026 at 7:05PM UTC
File size:67.85 MB
Downloads:425
Version:158.0a1
Uploaded:September 24, 2026 at 2:11PM UTC
File size:67.07 MB
Downloads:455
Version:157.0a1
Uploaded:September 10, 2026 at 4:40AM UTC
File size:48.14 MB
Downloads:454
Version:156.0a1
Uploaded:August 28, 2026 at 7:42PM UTC
File size:47.84 MB
Downloads:401
Version:155.0a1
Uploaded:August 13, 2026 at 1:25PM UTC
File size:48.15 MB
Downloads:910
Version:154.0a1
Uploaded:July 20, 2026 at 5:02PM UTC
File size:66.41 MB
Downloads:1,566
Version:153.0a1
Uploaded:June 15, 2026 at 2:12PM UTC
File size:65.26 MB
Downloads:1,512
Version:152.0a1
Uploaded:May 18, 2026 at 2:18PM UTC
File size:62.75 MB
Downloads:1,378
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