Chrome/Firefox: The SiteLauncher browser extension adds a one-stroke keyboard launcher to your favourite sites in Chrome and Firefox.
It's simple to use: After you've installed SiteLauncher, hit Ctrl+Space to bring up the keyboard launcher, which displays the favicons for a pre-defined set of sites along with some pre-defined shortcuts. Hit the shortcut key for any site and SiteLauncher will instantly load it. You can, of course, add or remove any site you'd prefer.
We've mentioned SiteLauncher for Firefox before, but now the snazzy little extension comes in a Chrome flavour, too. The nice part about SiteLauncher in Chrome is that it provides a quick way to set up keyword bookmarks, something Chrome's not not all that great at.
SiteLauncher's a free download for Chrome and Firefox.
SiteLauncher [Chrome Extensions]
SiteLauncher [Mozilla Add-ons]