Download Firefox Nightly for Developers 1.0.1914
This release comes in several variants (we currently have 3). Consult our handy FAQ to see which download is right for you.
Version:157.0a1
Uploaded:September 10, 2026 at 4:40AM UTC
File size:48.14 MB
Downloads:440
Version:156.0a1
Uploaded:August 28, 2026 at 7:42PM UTC
File size:47.84 MB
Downloads:377
Version:155.0a1
Uploaded:August 13, 2026 at 1:25PM UTC
File size:48.15 MB
Downloads:854
Version:154.0a1
Uploaded:July 20, 2026 at 5:02PM UTC
File size:66.41 MB
Downloads:1,547
Version:153.0a1
Uploaded:June 15, 2026 at 2:12PM UTC
File size:65.26 MB
Downloads:1,478
Version:152.0a1
Uploaded:May 18, 2026 at 2:18PM UTC
File size:62.75 MB
Downloads:1,366
Version:151.0a1
Uploaded:April 20, 2026 at 1:22PM UTC
File size:59.06 MB
Downloads:1,601
Version:150.0a1
Uploaded:March 23, 2026 at 11:36AM UTC
File size:58.14 MB
Downloads:1,414
Version:149.0a1
Uploaded:February 23, 2026 at 1:04PM UTC
File size:57.05 MB
Downloads:2,549
Version:148.0a1
Uploaded:January 12, 2026 at 2:44PM UTC
File size:56.34 MB
Downloads:1,503
































