Portable Google Chrome is still in beta stage. Portable Google Chrome is available for Windows, Mac and Linux operating systems.
Windows Vista/ XP
The latest version - Portable Google Chrome 4 is available for Download from Softpedia. You may download it directly here. Extract the file and copy it to USB stick. To launch the browser, click ChromeLoader.exe for a normal program start or IncognitoChromeLoader.exe for starting the Incognito (anonymous mode) of the Google browser.
Mac OS X
Mac OS X users may download Portable Google Chrome 3 from the original developer's website Stadt-Bremerhaven.The website is in German language. You may directly download the file here.
Linux (for Ubuntu and Super OS distros only)
Download RUNZ framework first. RUNZ framework helps to install software on Linux. It currently supports Ubuntu 8.04, Ubuntu 9.04 and Super OS 9.04 only. Now proceed to download Portable Google Chrome 3 for Linux.