This appendix provides a brief overview of the mainstream browsers in general use at the time of writing, including a little history about them, estimated market share, and how standards-compliant they are (along with whether they pass the Web Standards Project Acid2 Browser Test, at
www.webstandards.org/action/acid2/). Note that new versions of browsers are regularly released, so this section is intended only as a guide. Details are accurate as of October 2007.
Full name: Mozilla Firefox.
Initial year of release: 2004 (as 1.0).
OS: Windows, Mac OS X, Linux (unofficial ports to various other systems exist).
Market share estimate: 10'15%.
Trend: Steady growth.