Mozilla's Firefox browser does not lead Microsoft's Internet Explorer in market share, but it does lead in other ways. The new 3.5 version of Firefox introduced last week offers support for the latest standards, including HTML 5, XHTML, and SVG graphics -- all of which stock installs of Internet Explorer 8 do not support.
However, Mozilla does trail Internet Explorer 8 in one respect -- Mozilla has not offered an official 64-bit version of its software. One developer is working to catch Mozilla up, though. Since 2008 a contributor who goes by the screen name Makoto has ported Firefox 3.0, and now 3.5 to 64-bit editions. He has announced recently that he plans to contribute the 64-bit versions for 3.6 and up, which may mean that Firefox will at last get an official 64-bit build.
Advantages of the transition to 64-bit include faster speeds on pages using encryption, fast-call type function calls, and more efficient memory mapping of large files. Initial benchmarks from the 64-bit build show impressive gains in certain applications.