Freeware
Vista / Win10 / Win2k / Win7 / Win8 / Win98 / WinME / WinNT / WinXP

Utilu Mozilla Firefox Collection is a utility that contains multiple versions of the free web browser Mozilla Firefox, which are standalone so they can be used at the same time.

In Utilu Mozilla Firefox Collection you can quickly see how your websites look when rendered using different versions of the Gecko render engine. You can specify the filenames or locations (URLs) to open in all installed versions of Mozilla Firefox. Filenames or URLs that include spaces must be enclosed in quotes ("). Multiple filenames or URLs may be used by separating them by spaces. This will result in multiple tabs being opened.

Utilu Mozilla Firefox Collection contains the following versions of Mozilla Firefox:

Mozilla Firefox 2.0.0.20

Mozilla Firefox 3.0.19.0

Mozilla Firefox 3.5.18.0

Mozilla Firefox 3.6.16.0

Mozilla Firefox 4.0.0.0

Utilu Mozilla Firefox Collection contains the following add-ons and plug-ins:

Firebug 1.6.2 add-on

Web Developer 1.1.9 add-on

Flash Player 10.2.152.32 plug-in

Utilu Mozilla Firefox Collection has the following additional features:

It can open one or more local files and/or URLs in all installed versions of

Mozilla Firefox with a single click

It can appear in the context menu of Windows Explorer, so a file can be opened in every installed version of Mozilla Firefox directly

It can display the version number of Mozilla Firefox in the titlebar

It includes a number of window resizing options for the Web Developer add-on, settings for all common resolutions like 800x600, 1024x768, 1280x1024, 1440x900 and 1600x1200 are included

It can be installed for all users, so it's available for everyone

It can be installed and used silently, it's possible to create an unattended installation and use all functions using command line parameters

It even works under the most restricted user accounts after installation, only the installation needs to be done by someone with Administrator privileges

It supports both 32-bit and 64-bit versions of Microsoft Windows 98, 98 SE, ME, NT 4.0, 2000, XP, 2003, Vista, 2008 and 7

Note that Mozilla Firefox 3.0 and higher do not support Microsoft Windows 98, 98 SE, ME and NT 4.0