Download Firefox Developer Edition by Mozilla

We do not have a download file for the latest version (133), but you can try downloading it from the developer's site

Download version 90.0 from Software Informer

Scanned by 3 antivirus programs on Oct 16, 2026. The file is clean, see the report.

Download now Visit the home page mozilla.org

Version: 90.0 (x86)

Date update: Aug 25, 2021

File name: firefox_setup_91.0b9.exe

Size: 52.1 MB

Additional links

Download version 119.0 from the developer's website

Firefox Setup 68.0b13.exe

x86 44.5MB

Latest versions of Firefox Developer Edition

See all

90.0

Aug 25, 2021

firefox_setup_91.0b9.exe

x64 54MB

88.0

May 18, 2021

firefox_setup_88.0.exe

x86 52.1 MB x64 53.5MB

68.0

Jul 5, 2019

firefox_setup_68.0b13.exe

x86 44.5 MB x64 46.1MB

67.0

Jul 5, 2019

firefox_setup_67.0b15.exe

x86 43 MB x64 44.6MB

64.0

Nov 24, 2018

firefox_installer.exe

x86/x64 274KB

Alternative software

Firefox

Free

Surf the Internet securely on an open-source web browser.

Firefox Nightly

Free

Firefox Nightly automatically sends feedback to Mozilla, like hardware info.

Opera Developer

Free

Create web apps and websites using the latest experimental features of Opera.

PL/SQL Developer

Manage databases, execute SQL scripts, and develop program units for Oracle DBs.

Firefox Portable

Free

This is the portable version of the popular Mozilla Firefox web browser.

Firefox Developer Edition download

Additional links

Latest versions of Firefox Developer Edition

Alternative software

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