All you Mac users, please try out Camino 1.0. 
http://www.caminobrowser.org/
Dedicated Integration
Camino integrates tightly with your Mac OS X computing environment.
The native Cocoa interface and the beautifully-designed icons make
Camino a very useful and elegant desktop citizen.
OS X Integration
But integration does not stop with Camino's appearance. Camino
incorporates features that use Spotlight, Address Book, the
Keychain, the Finder, the Dock, Bonjour, Services, and System
Preferences. The Camino Project's commitment to the platform shows
in its support for Mac OS X versions 10.2, 10.3, and 10.4; on each
version, Camino provides the seamless experience users have come to
expect from software running on Apples Mac OS X.
Open Source

The Camino Project is proud to say that our product is 100%
open-source software. This revolutionary method of development
allows a diverse group of people from around the world to work
together on a product that is truly developed by and for the
people.
With so many eyes reviewing Caminos code, as well as that of the
Gecko rendering engine, problems are caught quickly, resulting in a
more robust and secure product.