FoxGLove is a portable Firefox browser with Google Apps goodness. Google chrome may be optimized for Google apps but Firefox is more customizable with addons and many people like it.
One Firefox user created FoxGlove with portable Firefox, some addons, and Chromifox theme. Download FoxGLove from Lifehacker, unzip it and click the shortcut to open. This is a portable Firefox so it won’t mess your Firefox settings. The home pages are set to Gmail, Google Docs and Google Reader. It comes loaded with extensions like Better Gmail, Better GReader, Better Youtube etc. It also comes with Google Gears in case if you want to use it.
FoxGLove erases all your private data when firefox closes, you can change that if you wish. Since it is portable you can carry it in your USB key. Overall this looks pretty good, if you use Google Apps everyday may be it is best suited to carry with your USB key.