*Google has also released official builds of Google Chrome for Linux and Mac OS X (see update below). If you are looking to install Chrome on a USB stick, check out Portable Google Chrome.
The Google Browser port, known as Crossover Chromium, is available for download on Mac OS X as a native Mac .dmg file or on Ubuntu, RedHat, Suse, etc. as standard Linux packages.
Google Chrome for Mac OS X- Screenshot
Google Chrome on Linux – Screenshot
Google Chrome is built with open source code from Chromium.
How to Install Google Browser on Mac / Linux
Mac users can simply drag the Chromium .dmg file into their Applications folder. Linux users should use the appropriate tools for their respective Linux distributions to unpack the installer package. Google Chrome on Linux is available for both 32bit and 64bit versions.
If you installed Google Chrome on Linux using the .deb package, you can uninstall the Google Browser using the Synaptic package manager or via the following command – sudo aptitude purge cxchromium
Google Chrome for Mac & Linux – Official Builds
Update: The official builds of Google Chromium are now available for Linux and Mac here. The interface and features of Chromium for Mac OS X are similar to that of Chrome for Windows but it’s a developer release and not very stable yet.