This is really a nice feature of Google Chrome: You can enable side tabs, which relocates the tabs to the sidebar. To try this, add the following command line flag to the Chrome launcher (need help? refer this article), and restart the browser:
--enable-vertical-tabs
To switch to side tabs mode: right click on any tab and choose "Use side tabs" option. Now, you can view tabs in the sidebar. See the following screenshot:

Cool! ![]()
Want to have this feature in Firefox? There are many add-ons for that! Try Tab Sidebar, which displays previews of your tabs in your sidebar.
Thanks Bennett Blodinger for the tip.
Also see: How To Sync Extensions In Google Chrome
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Arpit it seems to be available with dev channel.
@Mzord : I’m using Google Chrome 6.0.447.0 dev