The Mozilla Project has posted
Camino 0.8.4, a
Mac OS X web browser based on the Gecko 1.7 rendering engine and the Quartz GUI toolkit.
It supports pretty much all the technologies that Mozilla does: HTML, XHTML, CSS, XML, XSLT, etc.
0.8.4 is now compatible with Mac OS X 10.4 Tiger and
fixes several critical security bugs. All users should upgrade.
Mac OS X 10.1.5 or later is required.