Premium
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:145.0a1
Uploaded:September 20, 2025 at 3:52PM UTC
File size:58.17 MB
Downloads:183
Version:144.0a1
Uploaded:September 14, 2025 at 5:33PM UTC
File size:56.07 MB
Downloads:876
Version:143.0a1
Uploaded:August 18, 2025 at 9:16PM UTC
File size:55.76 MB
Downloads:998
Version:142.0a1
Uploaded:July 22, 2025 at 3:31AM UTC
File size:54.73 MB
Downloads:1,046
Version:141.0a1
Uploaded:June 23, 2025 at 5:45PM UTC
File size:54.02 MB
Downloads:888
Version:140.0a1
Uploaded:May 27, 2025 at 10:48PM UTC
File size:53.5 MB
Downloads:1,082
Version:139.0a1
Uploaded:April 28, 2025 at 5:45PM UTC
File size:52.36 MB
Downloads:1,527
Version:138.0a1
Uploaded:April 1, 2025 at 4:08PM UTC
File size:51.65 MB
Downloads:1,248
Version:137.0a1
Uploaded:March 3, 2025 at 3:19PM UTC
File size:51.04 MB
Downloads:994
Version:136.0a1
Uploaded:February 4, 2025 at 6:57AM UTC
File size:51.58 MB
Downloads:977
