Firefox is no longer supported on Windows 8.1 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR 64-bit

Download Firefox ESR 32-bit

Download a different build

Firefox is no longer supported on macOS 10.14 and below.

Please download Firefox ESR (Extended Support Release) to use Firefox.

Download Firefox ESR

Avís de privadesa del Firefox

Download Mozilla Firefox for Linux

Download for Linux 64-bit

Using Debian, Ubuntu or any Debian-based distribution?
You can set up our APT repository instead.

Avís de privadesa del Firefox