Name: Mozilla
Description: web browser (Navigator), web editor (Composer), email client and newsgroup reader (Mail & Newsgroups), IRC client (ChatZilla), address book
JavaScript Debugger (Venkman), DOM Inspector (Inspector) (and eventually Calendar, FTP client, download manager and more).

But Mozilla can be many more things as it is an open standards, cross platform (XP), development environment, thus supporting an infinite number of applications that can be written to run with it (see MozDev link further on)

Subject Area: \internet\browsers
Operating System(s): Windows, Windows NT, Mac, Mac OS X, Unix, GNU/Linux
Required System Files / dependencies:
Required Hardware: 64MB RAM and a couple of hundred megahertz proccessor to run comfortably. officially the minimum processor is an Intel Pentium 266MHz or equivalent but it will run, though too slowly, on a Cyrix 686-166 with 128MB RAM
Licensing Types: Free software
Languages Available: many, see
(beware, currently language files should only be installed with the version of Mozilla they were intended for, else results are unpredictable)
Author / Organisation:
Mail Address and Tel:
Email Contact(s):
Related Software: Netscape Navigator / Communicator (the Netscape branded version of Mozilla comes with an array of capitalist branding/consumer add-ons); K-Meleon; Galeon; Opera; Lynx; Internet Explorer
Standards Supported: XUL, XBL, JavaScript 1.5 (ECMAScript Revision 3), CSS1 (and large chunks of CSS2), DTD, RDF, XML, HTML, XHTML, MathML, SOAP, P3P; JPG, PNG, MNG, GIF
WWW Info/Download: download the latest release from download the latest nightly trunk build from, download the latest 1.0.x branch nightly build from

query the BugZilla bug/issue database at report bugs/issues using Bugzilla at

some useful bugzilla queries (Bugzilla is the Mozilla project's issue tracking tool) ... bugs fixed in the last day (press 'Submit query' button near bottom), today's checkins, today's reported bugs/issues, 'topcrasher' bugs, what needs to be fixed before Mozilla 1.0

more applications created using Mozilla technology can be found at; some examples: shared bookmarks, create Web-enabled applications that run on top of Mozilla's core engine
FTP Download:

Windows package with installer: mozilla-win32-x.x.x-installer.exe and mozilla-win32-installer-sea.exe
Windows package to copy over an existing installation (including Talkback): and
Windows version that installs over the Internet: mozilla-win32-x.x.x-stub-installer and mozilla-win32-installer

download the latest release or latest nightly build from

or get the latest release from or
and the latest nightly from and
however not all nightly builds will work, so Mozillazine ( rate these builds, and give a link to the latest useable nightly build

Email Discussion:
Email Announce List:
Usenet Discussion:
IRC Discussion: #mozilla (irc:// and #mozillazine (irc:// and more on (port 6667)
Freely Distributable? yes

amends Windows registry? yes includes an installer? yes
. .
Registry Settings of Note:
Registry Permissions Reqd [WinNT]:
Saves Icons to:
Files Copied & Location:
Log of Changes Installer Made: %PROGRAMFILES%\\mozilla\install_status.log
Behaviour in Windows NT Multi-User Environment: very good. a WinNT/2k install on a standalone system will automatically create a profile for each user, the files for which are stored in their own user area (a profile still cannot completely live on the server however, something still needs to be copied to each workstation)


Config / ini / Preference File(s):
See our document on pre-configuring Mozilla:

the order of precedence for preferences files is: ALL.JS -> PREFS.JS -> USER.JS

user profile directory locations:
  • Windows 95: 
  • Windows 98,Me: %windir%\Application Data\Mozilla\Profiles\profile-name\xxxxxxxxx.slt\) (for multi-user situations does Mozilla use %USERPROFILE%\Application Data\Mozilla\Profiles\profile name\xxxxxxxxx.slt\?)
  • Windows NT 4:
  • Windows 2000: %USERPROFILE%\Application Data\Mozilla\Profiles\profile name\xxxxxxxxx.slt\

user preference files:

  • %PROGRAMFILES%\\mozilla\defaults\pref\all.js ()
  • %USERPROFILE%\Application Data\Mozilla\Profiles\profile name\xxxxxxxxx.slt\prefs.js (changes in here will be wiped by Mozilla if Preferences are changed using the User Interface)
  • %USERPROFILE%\Application Data\Mozilla\Profiles\profile name\xxxxxxxxx.slt\user.js (Mozilla doesn't create this by default, but if you create it then changes in here will not be changed by Mozilla. good place to configure Mozilla similarly for multiple users, giving each a copy of this)
  • chrome/userContent.css
  • chrome/userChrome.css
settings worth making:
See our document on pre-configuring Mozilla: mozilla-pre-config.html

disallow JavaScript for Mail&News
user_pref("javascript.allow.mailnews", "false");


- add MIME types?: Navigator -> Helper Applications
- define Custom Keywords

preferences from within Navigator:
View -> Show/Hide -> Site Navigation Bar -> Show Only As Needed (Mozilla 1.0+ only)

delete default Personal Toolbar items

Sidebar -> Tabs -> Tinderbox: SeaMonkey - off
Sidebar -> Tabs -> Tinderbox: SeaMonkey-Ports - off
turn off Sidebar

delete imported Internet Explorer bookmarks (unless you've used Internet Explorer and used this feature)

see 'Customizing Mozilla' for more:
you can get a list of which preferences are set by typing about:config into the URI bar

preferences from within Mail and Newsgroups:
General Settings -> Use Mozilla Mail as the default mail application - on/off
Send Format -> Convert the message to plain text (some formatting may be lost)
Scripts & Windows -> Enable JavaScript for: Mail & Newsgroups - off
command-line switches (use 'Mozilla -switch'): you can combine command-line options so as to load multiple Mozilla components at the same time by using mozilla -component-name
the Mozilla components are:
  • Mail: -mail
  • Composer: -edit
  • JavaScript Debugger: -venkman
command-line options for dealing with Profiles:
  • Profile Manager: -ProfileManager
  • create a profile: -CreateProfile / -NewProfile (creates a fresh profile and quits without starting Mozilla)
  • allow installer to reset preferences on first startup: -resetPref

if Mozilla messes up and you uninstall then reinstall to fix the problem, it may still have problems unless you also manually delete %windir%\mozver.dat and %windir%\nsreg.dat

installs to:
%windir%\Mozilla (or maybe elsewhere if there are profiles for more than one user)

Win98: %windir%\Application Data\Mozilla (or maybe elsewhere if there are profiles for more than one user)

Win2k: documents and settings\username\Application Data\mozilla

whilst installing, Mozilla stores files in %temp%\ns_temp

Mozilla Mail saves email in MBOX format
from template version 2.3