Google Chrome has a labs tab (about:labs), where Chrome developers test few Labs features. One of those is Side tabs. I don’t prefer to use Side tabs. Not sure if this will be promoted in Chrome.
The newest labs feature is Tabbed options (chrome://options), which is available now in Canary Build (Download), that brings the Browser options in a tab and makes it easier to configure the browser. (By default, Chrome opens a popup window with the options, just like any other browser).
If you want to try this, Download and install Chrome’s Canary build (auto updated every week). You can install this version of Chrome in addition to the version you are already using. Once you install, type about:labs in the address bar, to choose the labs features you want to use. Labs feature is also available on Chrome Version 7 and above.