This website provides Experimental Mozilla Firefox and Thunderbird
builds, sometimes known as Unofficial Builds, that are compiler and
code optimized to provide better performance though equivalent
behaviour to Official Mozilla builds.
We host Version 1.5 Release Candidate builds for
Firefox and Thunderbird for the Windows XP x64 edition platform and
also some Windows 32-bit builds for SSE and SSE2
platforms. SSE broadly refers to the Intel Pentium 3 and some AMD
processors and SSE2 broadly refers to Intel Pentium 4, Pentium M and
Xeon processors along with AMD Athlon and Opteron processors that
support the SSE2 instruction set running. After progress in these
areas, we'll look at builds for Mac OSX on G4 and G5 processors and
then 32-bit Linux.
Most of the builds here will be builds of pre-release software and are
therefore experimental so we discourage their use for production
Official Mozilla builds are available at http://www.mozilla.org/
We will be adding pages on a few other topics as we have time.
to ensure the
the information, links available on this site and on other sites but we
assume no legal liability or responsibility for the completeness,
accuracy or usefulness of any of the information here. The information
provided here is provided for the end-user's information and is
provided strictly "as is." We make no representation or warranty,
express or implied, with-regard-to the information at this site or at
other sites linked to by this site.
Software downloaded from
web site or is provided "as is" without warranty of
either express or implied, including, but not limited to, the implied
warranties of fitness for a
purpose, or the warranty of non-infringement. We also do not guarantee
to provide support for any problems resulting from the use of software
available at this site.
We specifically do not
the software will meet your requirements, that it will be secure, that
it will be without errors, that it will be provided in a timely manner,
that the results from the software will be accurate or reliable, that
software quality will meet your expectations, that bugs in the software
at this site will be corrected. We also assume no responsibility for
errors or ommissions in the software at this website.
not be liable to
you or any third parties for damages of any kind or damages resulting
from the loss of data, profits, hardware or software in connection with
the use of the software at this site. Software downloaded from this
site is done at your own risk and with the agreement that you will be
solely responsible for any damage to your computer hardware, operating
system, network and software or any loss of data that results from
using software from this website.
- Linux Builds: We use Linux on a
daily basis but have no experience doing Firefox and
Thunderbird builds on the platform. At the moment, it's fairly low on
our priority list but moderate on our list of fun things to try.
Making Your Own Builds
If you'd like to do your own builds just for the satisfaction of being
able to do so or to share them with others or to put in some of your
own personal customizations, you can start by reading the directions in
Documentation document at the mozilla developer center.
Building Firefox or Thunderbird usually requires a certain level of
hardware and development software and assembling the pieces can take
quite a bit of effort. It can take quite some time to build on older
and slower machines or those that don't have a lot of memory. And it
can be a frustrating process on some platforms as the build
configuration can be very picky and fail for non-obvious reasons for
the smallest problem.
Third Party/Unofficial Builds forum
is a good place to ask questions about building or to get help if you
find that you have a problem building Firefox or Thunderbird. It's
always helpful if you post a screenful of lines around the error
message and provide your .mozconfig file and the environment setup
script that you're using. In general, builders are pretty helpful if
they can help but builders have busy lives too and it can sometimes
take some time to get a reponse to your questions.
We have some notes for builders in my Builders
Corner Page that we find useful from time to time. We plan to
add to this list over time.
Other Miscellaneous Stuff
Performance Ideas and Open Bug List
Problems and Solutions
News link page
Updated April 12, 2009. For comments and questions, send email to Vector.x64
(without the spaces).