Optimized builds from several builders for MacOSX, each for different CPU architectures. Each build is compiled especially to take advantage of the specific features of the listed processor in order to wring the best performance out of Firefox on Macs.
No longer maintained. The project provided a CD that bundled the Firefox browser and the Thunderbird email client for Windows, together with a selection of recommended extensions and themes.
Official site of the open-source browser. Includes product downloads, release notes, features overview, and information about switching from other browsers.