You can use command line arguments to start your Mozilla application with special behavior.

This article does not contain a complete list of all preferences. If you don't find an entry below for a given preference, check the Category:Preferences (multiple-page) listing, which includes many new preferences that have not been added here, as well as those preferences that have been migrated from sections of this article. Also check Mail and news settings for a listing of Thunderbird and Mozilla Suite/SeaMonkey mail and news preferences.

FrontMotion Firefox Community Edition is a customized version of Firefox with the ability to lockdown settings through Active Directory using Administrative Templates. Similar to lockdown settings with mozilla.cfg on one computer, you can now use Administrative Templates to enforce settings across your organization. Save time and frustration with our installer that is targeted toward the corporate IT administrator with manageability and upgradeability in mind. Note FrontMotion Firefox Community Edition is not Mozilla Firefox since there are code changes. FrontMotion Firefox Community Edition is freely available in many languages.

Manage Firefox preferences through GPO.

This add-on allows to manage preferences from windows registry. You can then use Group Policies from Microsoft Active Directories to manage Firefox preferences.
To use this add-on you will need an additional adm file to define the registry keys that GPO for firefox add-on will read.
Currently the add-on will read its preferences from HKLM or HKCU \Software\Policies\Mozilla\LockPref for locked settings and HKLM or HKCU \Software\Policies\Mozilla\defaultPref for normal users preferences.

Firefox is available in more than 80 languages thanks to the contributions of Mozilla community members from around the world.

fxa-auth-server - The Firefox Accounts authentication server.